(A)ingredient: 500g HK flour, 1tsp baking powder,  1 1/2 tsp yeast, 100g sugar,  1tsp spong gel,  45g shortening. (B)ingredient:  50g plain flour,  1/8tsp baking powder,  1/8tsp yeast,  1/2 tbsp sugar,  1/8tsp spong gel,  1tsp shortening,  30ml warm water, green color.  Mix all (A) ingredients, except shortening. Slowly add in 230 - 250ml warm water n [...]