In a bowl, add the ground beef, fresh mint and parsley, grated onion, tomato paste and spices, except for salt. Mix everything very well and if you have time, chill in the refrigerator.
When ready, season the meat mixture with salt and mix again. I chose to salt the last minute so it doesn’t draw the moisture out as it marinates.
Using metal skewers (or wood ones that are soaked), take ¼ of the mixture and form into an oval shape. Place the meat on the skewer and use your hands to firmly press the kofta onto the skewer into a long, oval and flat shape. You can also your use fingers to form crimps for texture and looks.
Lightly oil the kofta and place on medium-high heat either on a gas or charcoal grill and grill the kofta until the first side is charred (about 4-5 minutes), then turn over and continue cooking the other side for another 3-4 minutes.
As the meat cooks, lightly oil the vegetables and place on grill until they are charred and softened.
When done, place koftas and grilled vegetables on pita bread so meat juices can soak into the bread. Season grilled vegetables with kosher salt.
To serve, drizzle tahini sauce over kofta and vegetable sand serve with pita bread and lemon wedges.