As dessert for a barbecue with friends last weekend, I baked a kaffir lime cheesecake. Kaffir lime, a member of the citrus family whose fruit and leaves are an essential part of Thai, Indonesian, Laotian, and Malaysian cuisines, is an unusual flavoring for cheesecake. It is very aromatic but also astringent, a quality that I thought would go well with the richness of cheesecake.
To impart the flavor, you boil cream with whole kaffir lime leaves and then let it simmer for about twenty minutes as the cream reduces. The sweet, almost lemony scent is distinctive and you cannot successfully substitute regular limes for kaffir limes. Most Asian markets sell kaffir lime leaves, which freeze well.
The end result was fantastic. The recipe, which I based on this one (but used two eggs instead of one as I think the author wrote the incorrect number), produced a substantial but not overly-heavy cake, rich enough to be a dessert while not leaving you feeling like you ate a brick. Deviating from the recipe, I made a sour cream glaze with kaffir lime zest and sugar. I will definitely make this one again.