Jeruk Purut refers Kaffir lime eleaves in Indonesia which is also known as Daun Jeruk Purut and used in all sorts of Indonesian dishes. If you are planning to plant one, choose the variety where the young leaves are of a blood red colour. This is the variety used in Indonesian cooking. There is also a variety where the young leaves are yellow green, but the flavour of this variety is distinctly different. The leaves can be stored in the freezer.