what is tostada shells
Traditionally, a tostada is built on a deep-fried corn tortilla, but low-calorie tostada shells can also be baked or microwaved. The shell is used as a base for a small layered salad consisting of refried beans, guacamole, diced tomatoes, sliced olives, sour cream, shredded lettuce and grated cheese.raditionally, the tortilla is deep-fried in vegetable oil. This is considered the most authentic, and often tastiest way to prepare tostada shells, though if you are watching your calories you may wish to bake or microwave the tortilla. Ad. 2. Pour about 1â4 inch (0.6 cm) of vegetable oil into a heavy skillet.