The botanical classification of fruits is wildly confusing. Botanically speaking, which of these is actually a berry?

What botanists mean by “berry”

In everyday speech, a berry is usually a small, juicy fruit. Botanists use a narrower structural definition: a berry is a fleshy fruit that develops from one flower’s single ovary, with its seeds enclosed in the flesh. The label describes how a fruit forms, not its size, sweetness, or name.

That’s why tomatoes and grapes count as berries—and bananas do, too. A banana’s familiar edible portion develops from the flower’s ovary; cultivated bananas usually have tiny, undeveloped seeds rather than the large seeds of many wild varieties.

Why strawberries miss the botanical mark

A strawberry’s red flesh is not mainly the fruit formed from its ovary. It is enlarged flower tissue, while the little specks on the outside are the actual dry fruits, each containing a seed. Raspberries are different again: their clusters of juicy sections are aggregate fruits, assembled from many small fruit units that develop from one flower.

So a botanical “berry” isn’t simply a fruit that looks like one. The giveaway is what lies beneath the surface: whether the fleshy fruit comes from a single ovary and keeps its seeds inside.