Corn tortillas (as many as tacos you want to make)
Cheddar or jack cheese
1) Heat up the cast iron frying pan on medium high heat. While the pan is heating, prepare your ingredients. Cut some slices of cheese. Get the salsa out of the fridge.
2) When the pan is hot (sprinkle a few drops of water on it, they should sizzle) lightly butter one side of one tortilla and place it in the pan, butter side down. Using a spatula, quickly flip the tortilla over to the other side, and back again, repeating until there is melted butter on both sides of the tortilla. Let the tortilla sit in hot pan until pockets of air start to form bubbles in the tortilla.
3) Add slices of cheese to one side of the tortilla. Make sure to allow room for the cheese to melt and not spread all over the pan.
4) Flip the side of tortilla without the cheese over the side with the cheese, as if you were making an omelette. Move the folded cheese taco to one side of the pan. Add a second tortilla, lightly buttered on one side, and repeat the process.