That’s not a fast-food drink. Count 12 hours or more to get your refreshment. Well, it’s not really labor intensive.
Kuromame, black soy beans. Compil’ here.
After overnight soaking. I don’t know why they burst. That doesn’t matter.
Squeezed in cotton gauze. More details about soy milk making here.
That gives soy milk. The grounds are okara:
This okara will be used in next post.
You can drink the milk.
Or make a matcha latte. I foamed 1/3 of chilled milk with matcha green tea powder and poured on top. You can see a gradation.