Baking soda is useful! How to buy it cheaply in China

In our household we use baking soda not only for baking, but also for:

• deodorant
• toothbrushing
• mouth sores
• sore throats

In China, one can find expensive baking soda at the western-food shops, or inexpensive baking soda in grocery stores and markets, near the flour and rice. It is called ‘xiao3 su1 da3’ 小苏打， and a packet sells for a few yuan.