Prefer regional and local products
The longer the transport chain, the more products - especially in the fruit and vegetable category - break down on the way and are sorted out.
this way you also support the local agriculture. And the longer fruit and vegetables are on the road, the more they lose nutrients and vitamins.
Often fruit is harvested unripe for transport, so that its full taste and nutrients are not yet fully ripe. This also means that you tend to use seasonal foods and adapt your dishes accordingly.