2. After buying mangosteen, first pick off the leaves on mangosteen, and the pulp will be exposed at the top. Cut it down along the gap between two petals of pulp with a kitchen knife, and cut the peel to peel it off, like this one with no pulp exposed. Take a knife and cut it gently on one side. Be careful not to cut the pulp. Then break the peel from the cut hole, and finally take out the whole pulp. Be careful not to touch the purple water on the skin, otherwise the taste will be astringent.