Beef sirloin tip knuckle is a lean, boneless subprimal cut from the round section of the cow, sold peeled with the external fat cap and silverskin removed for convenience. This versatile cut typically weighs around 13 pounds on average and is priced per pound. It can be broken down at home into roasts, steaks, stir-fry strips, or ground into lean hamburger meat.

The sirloin tip knuckle is well-suited for slow roasting, braising, or sous vide cooking due to its lean profile. When sliced thin against the grain, it makes excellent deli-style roast beef. It is also a popular choice for beef jerky and stew meat. Because it is sold as a whole subprimal, it offers significant savings per pound compared to pre-cut portions.