It was vanilla. He will try anything, though I only let him have licks. He has enjoyed apples, spice muffin, strawberries, peanut sauce, tomato, ranch dressing, mild salsa and of course the usual: any meat or dairy. But let me reassure, he only gets nibbles or licks, maybe once a day. The odder items he got into himself when we weren't paying attention and didn't expect him to go after those unusual items.