Rocky Mountain oysters

Rocky Mountain oysters
Rocky Mountain oysters, served with lemon and cocktail sauce.
Alternative namesPrairie oysters, calf fries, cowboy oysters, swinging steak
CourseHors d'oeuvre
Region or stateWestern North America and South America
Serving temperatureHot
Main ingredientsBeef testicles, flour, pepper, salt
Food energy
(per 1 cup serving)
182 kcal (760 kJ)

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