Probably oysters.
You had literally any edible substance in the world to choose from and you went with oysters? Oysters in olive oil and garlic sounds delicious, and not even unusual.
On the other hand, I honestly can't think of anything that is good by itself but would be terrible fried with olive oil and garlic. Plenty of things probably wouldn't be better, like crème brûlée, but most would still be at least interesting.