system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5: Why do out of season fruits taste less sweet? Is it that they have less sugar in them?
gpt
Fruit usually starts producing sugar as it approaches peak ripeness. Out-of-season fruits are often grown in places where they *are* in season, and shipped to you. So in the American winter lots of apples and stuff come from New Zealand, for example, where it is summer.

In order to ship them from far away and have them not rot on the way, growers will harvest fruit early before peak ripeness. This means they get harvested before they start producing their sugar.