Boil the rice as explained above and leave to cool.
Boil the chicken in some water. Set aside. Finely chop Onions, Garlic and Lemongrass. Heat oil in a wok and fry Onion, Garlic and Lemongrass mixture. When browned add chopped chicken and other spices. keep frying for a further 3 minutes then add the coconut milk and reduce so the mixture is almost dry again. Leave to cool. Follow procedure below to make the Ketans.
On a lightly oiled square of tin-foil spread out the cooled down rice in a rectangular shape (5" x 3").