Stack 6 tortillas on top each and wrap with of a paper towel. Add two drops of water on the paper towel. Repeat with the other 6 tortillas. Set aside.
In a medium pot over high heat, add sausage links. Cover with lid and cook until nicely browned on all sides. Transfer to a plate lined with paper towels. Cut the sausage in half lengthwise.
Meanwhile, in medium non-stick skillet over medium heat, melt 1 tablespoon unsalted butter. Season the beaten eggs with salt. Once the butter is bubbling, add eggs. When the eggs start to set, run a spatula through the middle of the eggs to create soft curds. Repeat until the eggs are just cooked through. Transfer to a plate.
Heat each pack of tortillas in the microwave for about 35 seconds or until hot. Transfer the hot tortillas to a tortilla warmer or a plate with an aluminum-foil-cover.
It’s best to let everyone assemble their own tacos when serving. Place about 1 tablespoon scrambled egg on a tortilla. Add half of a sausage and 1½ teaspoons of queso fresco. Top with desired amount of taco sauce and/or hot sauce.