Kofta Burger with Fried Feta and Herbed Tzatziki recipes

Name: Kofta Burger with Fried Feta and Herbed Tzatziki recipes
Ingredients: ½ cup finely diced cucumber; ½ teaspoon salt, divided; 1 cup full-fat plain Greek yogurt; ¼ cup sour cream; 2 tablespoons finely diced red onion; 1 tablespoon fresh lemon juice; 1 tablespoon minced fresh dill; 1 teaspoon minced fresh mint; 1 teaspoon garlic powder; ¼ teaspoon pepper; 2 pounds ground bison or ground chuck beef; ½ cup chopped fresh Italian parsley; ⅓ cup finely diced onion; 3 cloves garlic, minced; 1 ½ teaspoons coriander; 1 ½ teaspoons cumin; 1 teaspoon salt; ½ teaspoon pepper; 1 pound block feta cheese, drained; ⅓ cup kumquat's gluten-free all-purpose flour; 2 large eggs, lightly beaten; canola oil; 6 gluten-free hamburger buns, split and toasted; 6 slices red onion; 6 slices ripe heirloom tomato