Brown ground beef in a large skillet over medium-high heat, breaking it into small crumbles as it cooks for about 5-7 minutes, until no longer pink. Drain excess fat, leaving about 1-2 tablespoons.

Add water, taco seasoning, tomato paste, cumin, garlic powder, and cayenne pepper to the skillet, then stir well to fully combine with the beef. Keep the heat at medium-high so the mixture loosens and mixes evenly, visually turning into a cohesive spiced base.

Simmer the mixture for 3-5 minutes, stirring occasionally, until the sauce thickens and coats the meat. You should see a glossy, clingy coating on the crumbles rather than a watery sauce.

Season with additional salt and pepper to taste, then stir and taste for balance. Use immediately over tacos, burritos, quesadillas, or other Mexican dishes, with the meat visibly saucy.

Cool any leftovers to room temperature, then store in an airtight container in the refrigerator for up to 4 days. Reheat until hot and steaming before serving, with the sauce returning to a coated texture.