The most common variety of these tropical fruit are purple-skinned but some are yellow or orange. The pulp is sweet but tart, juicy, very fragrant and refreshing. The seeds are edible and crunchy, but if only the pulp is wanted, push the flesh through a sieve. It is hard to tell if a passionfruit is ripe โ purple varieties may be ripe either when the skin is still smooth or when it starts to wrinkle (not withered). The lighter yellow varieties are ripe when smooth and have a little โgiveโ. Unripe passionfruit are very tart. Passionfruit pulp is available tinned or frozen.