How to Cook Rocky Mountain Oysters (2024)

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Rocky mountain oysters are the original sack lunch, and a regional delicacy of the Rocky Mountain region and the American West as well as parts of Mexico and Canada.

They're an organ meat that's underappreciated, sure, but considering what part of the animal they come from that's easy to understand.As a chef trained in whole animal butchery eating nose-to-tail is the only logical thing for me to do.

How to Cook Rocky Mountain Oysters (1)

Here I'm going to share with you everything I know about harvesting, processing and cooking this special organ meat.

Background

They're best known as Rocky Mountain Oysters, but, depending on the location they may go under different, colorful names. Here's a few examples:

  • Bull fries or calf fries
  • Bull’s eggs
  • Montana tendergroins
  • Swinging beef
  • Prairie oysters
  • Cowboy caviar

They're a local delicacy with a unique flavor still served in historic saloons, and an important part of American cowboy culture. There's even annual testicl* festivals in North Texas, and Rocky Mountain Oyster day in Colorado.

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Laugh all you want at the idea of communal nut frys and testy fests, but as long as they're prepared correctly these can be a delicious novelty dish. They're also one of the most inexpensive sources of food I know of, as pounds of bull testicl*s will cost about $4.99 each.

Full disclosure: I typically eat lamb fries as I have access to plenty, but the method for preparing and cooking here will apply to any similar animal.

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Every animal tastes different

I've eaten pork testicl*s, as well as beef, goat, boar, lamb, duck and venison, and one thing I've learned is that some are an acquired taste, but not all.

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Goat, lamb and boar have a strong gamey flavor, but pork and beef are mild, making them the best ones to start with if it's your first time, especially with a side of co*cktail sauce or horseradish sauce.

Texture

The texture is one of the things that makes fries special. After your first bite, you'll notice they're meaty and firm, but soft, with a texture similar to a fine sausage or a hot dog. They have a different texture than most skeletal muscles.

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If you or members of your family don't like offal like liver or kidneys, the firm texture makes these a good candidate for introducing people to offal, especially if you bread and fry them golden brown.

How to Prepare Rocky Mountain Oysters

Typically testicl*s are harvested from young bulls, spring calves or rams by cutting off the entire scrotum with a sharp knife. Ouch.

I butcher animals myself, so my pictures illustrate more of the process than others will. The only thing that's been done to the lamb testicl*s you'll see here is removing the furry scrotum after butchering, which peels off easily.

Removing the Membranes

Most testicl*s are going to come to you with the outer membrane removed. If all you have is the inner membrane attached, all you have to do is make a thin cut in the outer membrane, then peel it off to reveal the meat.

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If you bought your fries, they probably won't have the thick membrane pictured below, so you can skip to par-cooking.

Remove the Outer membrane (if attached)

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How to Cook Rocky Mountain Oysters (8)

Removing the thin, inner membrane

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Revealing the inner meat

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Cooking

There's a variety of ways to cook your tasty testes. Typically they're peeled and cooked in water, then sliced, breaded and fried. They can also be pounded flat before breading.

Fried Rocky Mountain Oysters

If you want traditional Rocky Mountain oysters dredged in a flour mixture and fried, try my method for trimming. Then fry them up and pass the hot sauce.

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Smoking

Smoking is a great alternative to frying. Put some slices out with cheese and cured meats and watch them disappear! If you want to try that, see my smoked rocky mountain oysters.

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How to Cook Rocky Mountain Oysters (14)

Print Recipe

4.42 from 24 votes

How to Cook Mountain Oysters

A simple walkthrough of trimming testicl*s straight from the animal for cooking. If the inner membrane sticks, par cook them. If it doesn't they can be peeled and cooked from raw.

Prep Time10 mins

Cook Time10 mins

Total Time20 mins

Course: Appetizer, Snack

Cuisine: American

Keyword: Lamb fries, Rocky Mountain Oysters, testicl*s

Author: Alan Bergo

Cost: 10

Equipment

  • 1 Sharp paring knife

Ingredients

  • rocky mountain oysters from lamb, beef or pork with outer sheath attached
  • Milk or water optional

Instructions

Trimming fresh testicl*s

  • Put the testicl*s on a cutting board and cut the ends off each one.

    How to Cook Rocky Mountain Oysters (15)

  • Carefully remove the thick outer membrane.

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  • Make an incision in the thin inner membrane, then carefully peel the membrane back to reveal the inner meat.

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  • From here, the testicl*s can be cooked, breaded and fried, or prepared however you like.

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To par cook (if the inner sheath sticks)

  • Cover the testicl*s with 2 inches of water and bring to a simmer. Cook for ten minutes.

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  • After ten minutes, remove the testicl*s and cool until you can handle them. Then trim and remove the sheath and inner membrane.

Video

How to Cook Rocky Mountain Oysters (2024)

FAQs

What is the best way to cook mountain oysters? ›

Deep-Fried testicl*s (Rocky Mountain Oysters):

Have the panko crumbs ready for dipping on the side. Heat the oil in a wok to 350°F. Dip each slice of testicl*s in the egg, then dip into the panko crumbs. Slip into the oil and fry from 1 to 2 minutes, until golden brown.

Are Rocky Mountain oysters cooked? ›

Rocky Mountain oysters or mountain oysters, or meat balls, also known as prairie oysters in Canada (French: animelles), is a dish made of bull testicl*s. The organs are often deep-fried after being skinned, coated in flour, pepper and salt, and sometimes pounded flat.

How do you slice mountain oysters to cook them? ›

Instructions
  1. Put the testicl*s on a cutting board and cut the ends off each one.
  2. Carefully remove the thick outer membrane.
  3. Make an incision in the thin inner membrane, then carefully peel the membrane back to reveal the inner meat.
  4. From here, the testicl*s can be cooked, breaded and fried, or prepared however you like.
Mar 16, 2020

Are Rocky Mountain oysters raw? ›

Rocky Mountain oysters are poached, broiled, baked and ground. In fact, you can prepare them just about any way whatsoever that you might like. So are they a regional delicacy or a stomach-curdling novelty that has long stopped being funny?

What is the best way to cook raw oysters? ›

Heat oven to 475 degrees. Working in batches, arrange oysters in a single layer in a 12-by-16-inch roasting pan fitted with a flat rack. Pour ⅓. inch of hot tap water into pan, and bake for 7 minutes, or until oyster shells have begun to open.

Do you rinse oysters before frying? ›

There's nothing worse than biting into a piece of shell though, so be sure to rinse the oysters in salt water before breading.

Are Rocky Mountain oysters actually oysters? ›

They are not bivalves of the sea

Rocky Mountain oysters are not oysters at all. They're mammal testicl*s, and most commonly come from bulls, bison, pigs, and sheep.

Are Rocky Mountain oysters healthy? ›

The combination of complete proteins along with robust amounts of essential nutrients like B vitamins, selenium, and zinc make rocky mountain oysters a potent snack that will support the health of your own sack.

How are Rocky Mountain oysters served? ›

Most eaters enjoy their testicl*s battered, fried, and served with a side of ketchup, co*cktail sauce, hot sauce, or mayonnaise.

How long to soak oysters before cooking? ›

Step 1: Rinse the oysters in cold water, picking off any barnacles, dirt, sand, or other flotsam. Step 2: Prepare an ice cold, saltwater bath. You'll want a ¼ cup of salt per 4 cups of water. Step 3: Plunge the oysters into the saltwater bath and refrigerate them for 1 hour.

How to quickly cook oysters? ›

Place oysters on a very hot, preheated grill, cover and cook for 5-6 minutes or until the edges of oysters curl slightly. If you can't shuck: Place the oysters, cup side up on a very hot, preheated grill, cover and cook for 1 minute. The oysters should now be slightly open. Quickly remove the oysters.

Are Rocky Mountain oysters safe to eat? ›

Bull testicl*s (aka, "Rocky Mountain Oysters") are an incredibly nutrient dense food with many health benefits. Eaten around the world, Rocky Mountain Oysters were made famous by ranchers in Colorado and Utah, who like to serve them up deep fried with ketchup or BBQ sauce.

Do Rocky Mountain oysters increase testosterone? ›

Dr. Diamandis says that consuming testicl*-based meat dishes, such as Rocky Mountain oysters (also known as prairie oysters), moose testicl*s, kakashere porkolt or criadillas, will lead to a brief boost in your own testosterone levels.

Where do people eat Rocky Mountain oysters? ›

The basic definition is that Rocky Mountain oysters are the testicl*s of a bull calf that are typically sliced and served deep-fried. They've long been a familiar fixture among cattle ranchers in the American West and western Canada. Additionally, you'll find juevos del toro in places like Spain, Mexico, and Argentina.

Can oysters be eaten cooked as well as raw? ›

Every year millions of Americans eat molluscan shellfish, especially oysters and clams. While many people can enjoy these foods in either raw or cooked form, certain people are at risk of illness from eating them raw and need to be sure to eat these foods only if they are cooked properly.

Are oysters better raw or cooked? ›

Eating raw or undercooked oysters that contain Vibrio bacteria can make you ill. Some kinds of Vibrio bacteria cause the illness vibriosis. An oyster that contains Vibrio doesn't look, smell, or taste different from any other oyster. Cooking oysters properly can kill Vibrio and other harmful germs they might contain.

How do you tell if oyster is raw or cooked? ›

Whichever way you cook oysters, you'll know they're done when they start to open their shells. Then, let them cool and use a knife to carefully pry the shell open all the way and scoop out the oyster. You can dip it in butter sauce, co*cktail sauce or just pop it in your mouth plain. Enjoy!

What is the best oil for frying oysters? ›

Use a high heat oil like peanut oil, vegetable oil or canola oil. Do not use olive oil - it will burn or catch the house on fire. Fry for 2-3 minutes; remove with slotted spoon, spider or strainer and place on a few layers of paper towels. Repeat until all oysters are fried.

Why are my fried oysters soggy? ›

If you drop the battered oysters too soon before the oil is hot enough you will end up with gummy and greasy oysters. To rectify this situation all you really need to do is to heat oil to 375 degrees and keep it there throughout the cooking process. But don't go much higher than that, if possible.

Can you cook oysters without shucking? ›

Heat is a great way to open an oyster, and the safest way to do so without a shucking knife. Cook oysters with the cupped side down, and the hinge end towards you. If an oyster gets too hot and pops open, this helps ensure any steam or sharp contents are sent the opposite direction.

How to safely cook oysters? ›

The FDA suggests boiling shucked oysters for 3 minutes, frying them in oil at 375°F for 10 minutes, or baking them at 450°F for 10 minutes. Clams, mussels and oysters in the shell will open when cooked. The FDA suggests steaming oysters for 4 to 9 minutes or boiling them for 3 to 5 minutes after they open.

Do you soak oysters before cooking? ›

-- When buying oysters in the shells, make sure that all are tightly shut before cooking. Discard any that are gaping; they`re dead and unusable. -- To make the oysters release the last traces of grit or sand, soak them in salted water before grilling.

How long to wash oysters? ›

Before you're ready to eat, let your oysters sit in a small bowl of icy water for 10 or so minutes. You'll notice sand and other debris will fall to the bottom of the water. Remove the oysters and discard the water. With a hard bristled brush, scrub the outside of the oyster.

What is another name for Rocky Mountain oysters? ›

They're known by many names: lamb fries, bull fries, Montana tenders, huevos de toro, cowboy caviar.

What state is known for Rocky Mountain oysters? ›

Rocky Mountain Oysters are a famous Colorado delicacy that may be surprising for the uninitiated.

Where are Rocky Mountain oysters most popular? ›

Foodies from all over the world come to Colorado in search of the legendary Rocky Mountain Oysters. For those that aren't as familiar with this delicacy, Rocky Mountain Oysters are hardly seafood. They are bull or bison testicl*s that are specially prepared, dipped in batter and deep fried to perfection.

Are rock or Pacific oysters better? ›

Rock oysters have this wonderful vegetal, minerally flavour that's incredibly long and nuanced, and I think it's superior. Pacifics, well it's just like you've been dunked in the surf." AOC chief Mark Allsopp sums up the flavour difference between Rock and Pacific oysters in more technical terms.

Do Rocky Mountain oysters taste good? ›

Because let's face it: For many people, anything fried is awesome. However, most traditional Rocky Mountain Oysters come off as just having a generic “fried” flavor, and simply taste like the bottled ketchup or seafood co*cktail sauce they're dipped in.

Are Rocky Mountain oysters a Colorado thing? ›

Rocky Mountain oysters are just one facet of Colorado cuisine. Still, you can't deny the position that fried testicl*s have in Colorado lore.

What consistency are Rocky Mountain oysters? ›

In the end, Rocky Mountain oysters are mostly like scallops in consistency, without the briny taste, and not any more off-putting than, say, a corndog.

What happens if you overcook oysters? ›

Overcooked oysters are flavorless and chewy. Don't overcook them. You can tell oysters are ready to eat when the shell begins to open. Raw oysters should always be served on ice.

Do you pour the water out of oysters? ›

Don't be afraid to pour out some liquid.

At the height of the season, there can be a lot of ocean water found in shells. Steer clear from draining the oyster completely, though, as the liquor is full of briny flavor. As Jacobsen says, an oyster is like “a bouillon cube of the bay.”

Do you flip oysters after eating? ›

Flipping the Shells

After an oyster is eaten, its shell should be placed face down on the serving platter. For people eating as a group, they can better avoid spreading germs by placing the oyster shells that came into direct contact with their mouths face down on a designated share plate for discarded shells.

How long does it take to cook oysters on the stove? ›

Cover and steam 5 to 8 minutes, removing oysters as they open. Discard any unopened oysters. Repeat with remaining oysters. Serve hot oysters in shells with butter.

Does lemon cook raw oysters? ›

No, this is false. Hot sauce and/or lemon juice will not significantly affect any of the food-borne pathogens.

Do oysters make sperm stronger? ›

Oysters – Zinc, Vitamin B12, Vitamin D, and Selenium

This combo makes oysters one of the top foods for boosting sperm count and motility. Vitamin B12 plays an important role in sperm development, as it does with all cells.

Do oysters make men more fertile? ›

There's a reason oysters are known as aphrodisiacs. They contain more zinc per serving than any other food, and foods high in zinc may help with male fertility by increasing sem*n volume and sperm motility.

Do oysters help prostate? ›

Shellfish, in general, are an excellent source of zinc, calcium, copper, iodine, iron, potassium, and selenium. But the creamy flesh of oysters stands apart for its ability to elevate testosterone levels and protect against prostate cancer.

Where are the most expensive oysters? ›

These are the Bluff oysters, the name of a small seaside town in New Zealand where these shellfish are found, which are caught only in the summer season, roughly from March to August.

How much is a pound of mountain oysters? ›

Our Price: $19.99

Rocky Mountain Oysters.

Are mountain oysters good to eat? ›

Bull testicl*s (aka, "Rocky Mountain Oysters") are an incredibly nutrient dense food with many health benefits. Eaten around the world, Rocky Mountain Oysters were made famous by ranchers in Colorado and Utah, who like to serve them up deep fried with ketchup or BBQ sauce.

How do you eat mountain oysters? ›

No, these “oysters” come from the underside of a bull. In American West and Western Canada, repurposing castrated bulls' testicl*s has made for legendary snacking. Most eaters enjoy their testicl*s battered, fried, and served with a side of ketchup, co*cktail sauce, hot sauce, or mayonnaise.

Are mountain oysters healthy? ›

In America, bull testicl*s are the most common, and go by many names like cowboy caviar, lamb fries, bull fries, Montana tendergroin, and of course, rocky mountain oysters. Loaded with protein, vitamin B, selenium, and zinc, there's no reason not to go nuts with these, well, animal nuts.

How healthy are Rocky Mountain oysters? ›

If you do opt for a healthier co*king method, then rocky mountain oysters can be part of a healthy diet. According to Thrillist, gonads are a good source of protein and many vitamins and minerals. Still, they're hard to find raw and any way besides deep-fried, especially in this part of the country.

What state eats Rocky Mountain oysters? ›

Rocky Mountain Oysters | Traditional Offal Dish From Colorado, United States of America.

How do you fully cook oysters? ›

Bring steaming liquid to a boil and then cover the pot with a lid. Steam the oysters for approximately 5 minutes. Turn the burner to medium-high and allow the oysters to steam for 5 to 10 minutes — 5 minutes for a medium-cooked oyster, 10 for a well-done oyster. At this point, most of the oysters should have opened.

How do you tell if oysters are done cooking? ›

Whichever way you cook oysters, you'll know they're done when they start to open their shells. Then, let them cool and use a knife to carefully pry the shell open all the way and scoop out the oyster. You can dip it in butter sauce, co*cktail sauce or just pop it in your mouth plain.

Are Rocky Mountain oysters popular? ›

The testicl*s are skinned, sliced, battered, and deep fried until golden brown. Platted and traditionally served with co*cktail and horseradish sauce. Rocky Mountain Oysters are a favorite for many Coloradans and are popular with tourists as well.

What are the saltiest oysters? ›

Bahia Falsas and El Cardons, from Baja California, may be the saltiest oysters on the planet.

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