Three Olive Tapenade

I was going to buy some tapenade at the store for my Grilled Tomatoes Tapenade recipe but after seeing the price for a small container I decided to make it at home. I used a few leftover black olives, some green olives with pimentos, and kalamata olives. I chopped them all up and tossed them with a bit of garlic, balsamic vinegar, and olive oil. This tapenade works perfectly with the above tomato