In a small bowl mash avocado, juice, hot pepper sauce, and garlic. Stir in yogurt.
Cover and refrigerate until serving time.
Lentil Tacos
Preheat oven to 400°F. In a medium saucepan over medium-high combine water, lentils, onion, chili powder, garlic, and salt.
Bring to boiling. Reduce heat. Cover and gently boil 12 to 15 minutes or until lentils are just tender.
Uncover and boil 5 to 15 minutes or until most liquid evaporates.
Remove lentils from heat. Stir in 1 cup of the tomatoes and ¾ cup of the cheese. Spoon into taco shells. Stand filled tacos in 13×9×2-inch baking dish.
Sprinkle tacos with remaining tomatoes and cheese. Loosely cover dish with foil. Bake 3 to 5 minutes or until cheese melts.