4 cans condensed milk (300 ml)
1 kilo cooked, mashed ube
1 cup cornstarch dissolved in
¼ cup water

Mix together mashed ube and condensed milk. Cook in a heavy pan over low fire. Add a dash of ube or violet food coloring. Stir constantly. Halfway in cooking, remove from heat and add dissolved cornstarch. Blend well, put back on fire. Continue cooking until it thickens and mixture separates from pan. Cool. Then, shape into balls, roll on sugar. Wrap in cellophane.