Sirloin Tip vs Tendon — What's the Difference?
Quick Answer
Sirloin Tip (sirloin tip (knuckle)) and Tendon (beef tendon) are not the same cut: Sirloin Tip is round primal (Front of the rear leg, between sirloin and round); Tendon is offal primal (Connective tissue at joints — particularly the hock/lower leg).
Canonical entities: Sirloin Tip · Tendon
Side-by-side
| sirloin tip | tendon | |
|---|---|---|
| Primal | round | offal |
| Muscle / location | Front of the rear leg, between sirloin and round | Connective tissue at joints — particularly the hock/lower leg |
| 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. | Collagen-rich connective tissue extracted from the leg joints, particularly the Achilles tendon area. Extremely gelatinous when slow-cooked; provides body and sticky texture to braises and soups. Prized in Korean, Vietnamese, and South Asian cuisine for its chew and the richness it adds to broth. |
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.
Tendon
Pick Tendon when its primal/muscle traits fit the dish: Collagen-rich connective tissue extracted from the leg joints, particularly the Achilles tendon area. Extremely gelatinous when slow-cooked; provides body and sticky texture to braises and soups. Prized in Korean, Vietnamese, and South Asian cuisine for its chew and the richness it adds to broth.
Sirloin Tip and Tendon are different canonical muscles/primals: Sirloin Tip is round (Front of the rear leg, between sirloin and round); Tendon is offal (Connective tissue at joints — particularly the hock/lower leg).
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) · tendon (what-is) · sirloin tip hub · tendon hub