My recent trip to Costa Rica was fortuitous in several respects, not the least of which was that one of my favorite tropical fruits was in season and I indulged myself at every opportunity. There are three varieties of passion fruit; the variety I had in Costa Rica is the same as lilikoi in Hawaii. It is a tart fruit but with the lovely underlying flavor of passion fruit. Called Maracuya in Latin America, it is made into a refreshing beverage served icy cold as well as a rich, creamy pie. It occurred to me as I ate a piece, that the recipe was either similar to, or the same as, the one I use for Key Lime pie.