For the kofte burger: With your hands, mix together the ground beef, onion, coriander, cumin, sumac, cayenne and some salt and pepper in large bowl. Divide the mixture into four 4-inch patties.
For the yogurt sauce: Mix the Greek yogurt, lemon zest and juice, garlic, cumin, cilantro, dill, mint and cucumber in a large bowl. Season to taste with salt and pepper.
Cook burgers on a grill or in a skillet (recommended) to the desired doneness. Salt and pepper the burgers liberally and let rest for 5 minutes to ensure a juicy patty.
Split the burger buns and spread about 1 teaspoon harissa each of the cut-sides. Layer with a burger, arugula and parsley. Top with some yogurt sauce and chow down!
Let burger rest for at least 5 minutes off heat after cooking to ensure a juicy patty.
This recipe was created by a contestant during a cooking competition. It has not been tested for home use.