When the liquid starts boiling, lower the heat and add to the pots rolled oats, protein powder, cocoa powder, a pinch of salt and optionally maple syrup or honey to taste. Using a whisker or wooden spoon, stir well until all the ingredients are combined and no lumps are left in the oats. Simmer, while stirring, for about five minutes, or until the protein oatmeal has reached the desired texture. The longer you cook it, the thicker it gets.