For the tacos:

1 tablespoon olive oil
2 tomatoes, chopped
2 teaspoons cumin
2 teaspoons ground coriander
2 teaspoons chili powder
4 leftover burgers, chopped
Salt to taste
4 tortillas
½ cup grated cheddar cheese

For the salsa:

8 radishes
2 tablespoons cilantro, chopped
½ red onion, finely chopped
1 teaspoon minced ginger
Juice of ½ lime
1 tablespoon olive oil

1. Heat oil in a large sauté pan and add the tomatoes, cumin, coriander, and chili powder. Cook down until the tomatoes have lost their shape.
2. Break-up leftover hamburger patties, and to tomato mixture and warm through. Season with salt.
3. Place radishes in food processor, grating them for the salsa mixture. Combine all ingredients for salsa in bowl.
4. In another sauté pan, warm the tortillas, one minute each.
5. Divide the meat among the tortillas, top with cheese and salsa, and serve.