Gyro Smashed Burger Tacos

Name: Gyro Smashed Burger Tacos
Prep time: 5 min
Cook time: 10 min
Total time: 15 min
Cuisine: American, TexMex
Ingredients: 4 medium sized tortillas; 500 grams ground lamb meat; 1 white onion; 2 garlic cloves; 2 tablespoons chopped mint; 1 teaspoon dried oregano; 1 teaspoon ground cumin; zest of 1 lemon; salt and pepper to taste; 200 grams sour cream or greek yogurt; 1 cucumber; 2 garlic cloves; handful of fresh dill; juice of 1/2 lemon; 1 teaspoon olive oil; salt and pepper to taste