The Kaffir lime leaves have a refreshing lemon/lime flavour and are tender(non-fibrous) when young. All countries in ASIA use Kaffir lime leaves for flavouring all kinds of Asian dishes from soups to fish ....more Kaffir leaves use in cooking than lemon grass, etc.  They can be raw chopped into green salads and added to dishes that need that citrus lemon/lime touch to come alive with flavour....can also substitute for lemon grass in most recipes. The zest(skin) and flesh of the Kaffir lime is valuable for flavouring all kinds of food.... muffins thru to meat dishes....particularly in Asian dishes....where this lime has been used for centuries, The Kaffir lime is well suited for container growing and you can start "eating" your crop of leaves as soon as you receive your plant and the fruit a few months later.