1.
Put washed soybeans into a Teflon-skillet and place over medium heat.
2.
Stir with a wooden spatula and roast until browned partially on the surface and the skins are popped.
3.
Transfer roasted beans into a preserving bottle and pour on amazu. Ready to eat when the beans have soaked up amazu and become expanded. (Takes about 6 hours.) Lasts for 2weeks at normal temperature.