Ingredients
600 ml water
100 gm (about 3/4 cups) water chestnut flour (Pan Tang Guangzhou 廣州泮塘特產)
1 tsp / about 3 gm cornflour / corn starch
2 tsp oil
50 gm (1/4 cup) white sugar
50 gm (1/4 cup) brown sugar slab (冰片糖), finely chopped
10 water chestnuts, fresh, frozen or canned, roughly chopped