Mantou Buns with Soya Milk (TM5 Metric)

• 200 g soybeans
• warm water, to soak

Mantou Buns

• 1 ½ tsp dried yeast, active
• 40 g brown sugar
• 240 g water
• 500 g white flour, plus extra to dust
• 2 tsp vegetable oil, plus extra to grease
• 1 tsp salt

Soya Milk

• 1160 g cold water
• 60 - 85 g sugar, to taste