Cool down coconut milk (except one can) for one day to separate water from fat. (Fat on the top, water on the bottom)

One can of coconut milk mix with sugar and starch in a pot, boil it for a while, reduce the volume a little bit. Cool it down.

Mix separated fat, vanilla extract, sweet base, salt, optional ingredients.

Freeze it for at least 4-6 hours, stir every hour first 3 hours.

Container should be closed, at least with paper, to prevent formation of ice.