The “Tilbok“

2 kg (4.4 lb) ube (purple yams) or 32 oz frozen grated ube

1 can (12 oz) evaporated milk

1 can (14 oz) sweetened condensed milk

1 can (14 oz) coconut milk ½ cup (125g) butter or margarine, plus 2 tbsp (30mL) extra 1 tsp (5mL) vanilla extract

1 cup (200g) white or brown sugar (optional)