Sirloin Tip vs Testicles — What's the Difference?
Quick Answer
Sirloin Tip (sirloin tip (knuckle)) and Testicles (testicles (criadillas/Rocky Mountain Oysters)) are not the same cut: Sirloin Tip is round primal (Front of the rear leg, between sirloin and round); Testicles is offal primal (Removed at castration — sold as a standalone cut).
Canonical entities: Sirloin Tip · Testicles
Side-by-side
| sirloin tip | testicles | |
|---|---|---|
| Primal | round | offal |
| Muscle / location | Front of the rear leg, between sirloin and round | Removed at castration — sold as a standalone cut |
| Character | Also called the knuckle. A lean, moderately tender cut from the front of the round, near the sirloin. Used for roasts, kabobs, and stir-fry. Not from the sirloin despite the name. | Bull testicles. Sold and prepared as a standalone cut across multiple cultures. Known as criadillas in Spain and Latin America, Rocky Mountain Oysters in the US west, and Prairie Oysters in Canada. Typically peeled, sliced, and deep-fried or grilled. |
Key differences
- Different primals: round vs offal.
- Texture and slicing: compare fibrous, grain-heavy cuts vs more tender steak-style muscles based on each cut’s description.
- Retail naming diverges by country—always map through a canonical cut when translating menus or labels.
When to use each
Sirloin Tip
Pick Sirloin Tip when you want its specific marbling/texture profile: Also called the knuckle. A lean, moderately tender cut from the front of the round, near the sirloin. Used for roasts, kabobs, and stir-fry. Not from the sirloin despite the name.
Testicles
Pick Testicles when its primal/muscle traits fit the dish: Bull testicles. Sold and prepared as a standalone cut across multiple cultures. Known as criadillas in Spain and Latin America, Rocky Mountain Oysters in the US west, and Prairie Oysters in Canada. Typically peeled, sliced, and deep-fried or grilled.
Sirloin Tip and Testicles are different canonical muscles/primals: Sirloin Tip is round (Front of the rear leg, between sirloin and round); Testicles is offal (Removed at castration — sold as a standalone cut).
Choose based on tenderness, marbling, grain direction, and how you plan to cook (sear vs braise vs slice thin).
Read the full guides: sirloin tip (what-is) · testicles (what-is) · sirloin tip hub · testicles hub