Mexican tostadas are corn tortillas fried until crisp with all sorts of toppings.
For each tostada
Spread refried beans on a fried corn tortilla, add shredded lettuce, 1/2 cup meat, salsa, some chili slices if using, some crumbled cheese, a couple of avocado slices, a couple of tomato slices, and two level tablespoons of sour cream.
Use red or green Mexican salsa to taste.
To prepare tortillas, heat oil in a pan, add tortillas, 1 or 2 at a time, and fry until crisp.
Alternatively, brush tortillas with oil and place on a parchment lined baking sheet. Bake at 350º F 5-7 minutes, or until lightly brown.
In a pan, fry 1 lb beef or pork mince for 4-5 minutes, or until browned. Add 1 16 oz jar chili con carne sauce and cook for a further 4-5 minutes. No need to add red or green Mexican salsa to make the tostada, then.