Mandarin oranges are easy to peel. Sugar oranges: The peel color of sugar oranges is redder. The red mentioned here is not red, but redder than that of tangerines. The peel of sugar oranges is covered with dense "sand spots", which you can think of as "blackheads", so it's easy to remember. The taste of sugar orange is very sweet and the acidity is very low. The peel of sugar oranges is very fragile and it is impossible to peel off the whole piece.

You will find that you even have a little trouble peeling sugar oranges because the peels are in pieces