Even though a lot of people don't like grapefruits due to their bitter taste, ripe ones are almost as sweet as oranges. Actually, they are a cross between an orange and a pomelo. However, their bitterness can make them taste less sweet, and that's why some people often add sugar. Supposedly, this fruit is red. The redder the flesh, the sweeter the flavor, like in our Grapefruit Pixel cursor pack. But with one exception - you can't eat it.