Soy milk is a traditional Chinese beverage that has been enjoyed for centuries. It is made by soaking and grinding soybeans, then boiling the mixture and straining out the solids. The resulting liquid is a creamy and nutritious drink that can be enjoyed hot or cold. In Shanghai, you can find street vendors and small shops selling freshly made soy milk. It is often served with savory or sweet accompaniments like fried dough sticks (youtiao) or sweet pastries.