Thai green chilies may be small in size, but they are fiery hot! Be very careful not to touch these chilies with bare hands once they are cut open. Before chopping the chilies, either wear gloves or rub fingers with oil to prevent hands from burning for days after!
Kaffir lime has a much stronger fragrance than the smooth skin lime. Making green curry paste with kaffir lime will result in a more aromatic paste. However, the only useful part of the kaffir lime is the rind. It does not produce much juice and this juice is sometimes quite bitter. If it is hard to obtain kaffir limes, substitute with the smooth skin limes.