Mrs. Bear brought up the "vegetable or fruit" controversy in a recent post, which reminded me of a theory I've been wanting to get feedback on.
People always talk about how tomatoes aren't really vegetables, but fruits—when in fact, about half of what we normally call vegetables are technically fruits. Cucumbers, all squashes, all peppers, and eggplants all contain the seeds of the plants. But I've never heard anyone talk about how pumpkins are really fruits. True vegetables would be leafy greens (lettuce, rhubarb) and roots (jicama, onions).
I think that in common usage, the difference between a fruit and a vegetable actually depends on the sugar content. Tomatoes are very sweet, which might be part of why they grab all the attention here. Of course, bell peppers and carrots are also pretty sweet, but they have some sharper flavors as well which may mask the perception of sweetness.
What do you think?
