Watermelons

Oval or round in shape, with a smooth, hard and glossy skin, they can be dark green or light green with streaks. The flesh is sweet, crunchy and red and dotted with black or white seeds.
How to choose them: tap them firmly with your knuckles: if the watermelon is ripe, the sound will be full and dull, if it is unripe, the sound will be softer.