Sir's Homemade Tortilla Shells

My father-in-law, called "Sir" by his grandchildren, loves to experiment in the kitchen. He shared his latest innovation with me last weekend during our visit. One night for supper he decided to spray large flour tortillas with cooking spray and shape them into a metal colander. Then he baked them until they were crispy and used them to serve taco salad. My mother-in-law said the shells were a hit!