Greek-Inspired Grilled Lamb Burgers

Name: Greek-Inspired Grilled Lamb Burgers
Cuisine: Mediterranean, Greek, European
Ingredients: 1 pound ground lamb; ½ pound ground beef; ¼ cup minced shallot (or 1 large shallot); 2 garlic cloves (minced); 1 ½ teaspoons dried oregano; 1 teaspoon ground cumin; 1 teaspoon paprika; 1 ½ teaspoons Kosher salt; ½ teaspoon freshly ground black pepper; ½ cup greek yogurt; 2 tablespoons extra virgin olive oil; 1 garlic clove (minced); 1 tablespoon minced dill; ½ cup finely chopped mini cucumber (1 mini cucumber); 1 tablespoon freshly squeezed lemon juice; ½ teaspoon distilled white vinegar; ¼ teaspoon Kosher salt; 2 cups thinly sliced romaine; 1 tomato (thinly sliced); ½ small red onion (thinly sliced); 2 pita breads (cut in half to make 4 pita pockets)