Kaffir lime is also known as kieffer lime, makrut, or magrood, native to Indonesia but widely grown worldwide as a backyard shrub
cement
For use in building work, whitewash etc, you'll use limestone (CaCO3) that has had all its water removed, and then ground to a fine powder. If it has been roasted it will have the CO3 removed as well...
to make mortar
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