Before cutting the mochi out of the pan trim the dry edges off. These can be put aside and eaten, but they don't look as special as the rest of the pieces.
Mix the dry ingredients thoroughly.
Combine the coconut milk, water and vanilla extract in another bowl. Slowly add to dry ingredients and mix till smooth. Add food colouring and stir.
Pour into a well greased 9x13 inch baking pan. Cover tightly with aluminium foil and bake in a preheated oven 350 degrees exactly one hour. Remove from the oven and remove foil. Let it cool then cut into strips and peel up from the pan then cut the strips into smaller pieces. Before cutting roll the strips in the potato starch to keep the mochi from sticking together.
This does not need refrigeration and can be stored in an airtight container. It won't last very long. Believe me.
Related Tags: mochi, japanese confectionary