How to buy fruits
This page tries to become a guide on how to choose fresh and sweet fruits in a shop or on a market.
Watermelons
First, watermelons should be filled-out with spherical or cylindrical shape. A watermelon that has the shape of an eggplant indicates some trouble during growth---possibly a lack of water. A lack of water will have a negative effect on taste. Second, the surface structure pointed out by the arrow in the image below is a sign for sweetness. Third, if you see a watermelon cut in half, big cracks in the flesh also indicate sweetness.
Apples
If you want to buy sweet apples, look for the type of surface structure marked in the image below.
© Su-Chen Wang and Heiko Hoffmann