Strawberries Aren't Actually Berries

The way we classify fruits in the kitchen is often at odds with the strict definitions used in botanical science. To a botanist, a "true berry" is a fleshy fruit (Review) that develops from the ovary of a single flower and contains its seeds on the inside. This precise classification leads to some surprising members of the berry club. For instance, bananas, with their minuscule, often overlooked seeds, are technically berries. The same is true for avocados, grapes, tomatoes, and even watermelons, which are a specific type of berry known as a pepo.

The beloved strawberry, however, fails this botanical test. The sweet, red flesh we enjoy is not the flower's ovary but rather the swollen receptacle—the part of the stem that holds the flower. Furthermore, those tiny specks on the outside aren't just seeds. Each one is a separate, tiny fruit called an achene, which contains a single seed inside it. Because it's a cluster of many small fruits on a fleshy part that isn't the ovary, the strawberry is classified as an "aggregate accessory fruit," a far more complex and fascinating title than simply a berry.