Yes, fenny is made from Cashew apple, not nut. Cashew apple is called a pseudo fruit, as the fruit does not fully develop from ovary tissue, but partly from the thalamus. another good example of pseudo fruit is Ananas. Pomes like apple, pear are also comparable to pseudo fruits, but the core develops from the ovary, so known as accessory fruits.The fig is an aggregate complex pseudofruit, known as syconium.