Elephant garlic - allium ampeloprasum - is probably more closely related to the leek than to ordinary garlic. The bulbs are very large and can weigh over a pound. A single clove of elephant garlic can be as large as a whole bulb of ordinary garlic. In terms of flavour, elephant garlic is to garlic what leeks are to onions. It is much less intense and sweeter. It has been described - rather unkindly - as "garlic for people who don't like garlic".  belitrix