Homemade khao piak sen / banh canh noodle soup This is a labor of love and although it’s one of my favorite foods, I don’t make it very often. The ingredients are simple, it’s rice flour, tapioca starch and boiling water. Noodles: 1 bag rice flour (16 oz) 1 1/3 bags tapioca starch 4.5 cups of hot water Add rice flour and tapioca starch to a mixer. Slowly add hot water in small amounts and you may add a little less or more as needed. Mix for a couple minutes or until the dough is smooth. The doug