Combine ground beef, 1 ⅔ cups water, taco seasoning, cornstarch, and cocoa powder in a mixing bowl.
Mix by hand or with a mixer until all the ingredients are fully incorporated. It should be sticky and almost like a thick batter.
Grease a large nonstick skillet or Dutch oven with cooking oil.
Add the meat mixture.
Pour the remaining ⅔ cup water in, cover, and cook on medium-high heat for 5 minutes.
Using a spatula to break up the meat completely.
Allow to simmer on low heat, uncovered, until the water evaporates and the meat mixture thickens, 20-30 minutes.
Taste along the way and season with salt if needed.
Serve with hard or soft taco shells, or use it to create your favorite Taco Bell item!
