I was able to pick up everything I needed for these at Whole Foods except the slider buns which I got from Calandro’s. Whole Foods has one pound packages of ground lamb all the time, bison as well if you want to go that direction. The salad bar is right there to get just the right amount of spinach, red onion, and tomato. And their house made tzatziki was perfect for this execution. I used the rest of the lamb in a ground beef, pork, and lamb meatloaf that I posted earlier.