Wax apple
Actually a bell-shaped berry that tastes nothing like an apple, wax apples are most commonly red but also come in colors that range from white to green, red to crimson, or purple to black. Its thin skin has a sheen that gives it a waxy appearance, and the inside is white and spongy with a flavor like that of snow pears.
Also called water apples, rose apples and Java apples among other names, wax apples are native to the Malay Islands, as well as the Andaman and Nicobar Islands, but are also commercially grown in Taiwan and Thailand.