It's easiest to mix all the ingredients together, which is what I used to do. But I have found that the flavors come out and blend together better if I warm the spices in about a tablespoon of olive oil, just until it sizzles.
Traditionally, these are molded into sort of long meatballs (about 3 to 4 inches long and 1 1/2 inches in diameter) and put on skewers to grill.
I just skip the skewers.
Serve with Tzatziki with Mint-Cucumber Yogurt Sauce. (See recipe)