2. The first method: hot water bottle
Red beans: hot water = 1: 4 ~ 6 (or above), put it overnight and cook it the next day. It only takes about 30 minutes to enjoy the cooked red bean soup.
Note: Red beans will get bigger, so don't put too much. Red beans and hot water are less than 60% of the thermos. This method is suitable for making a small amount of red bean soup. If you want to make more, please prepare more thermos bottles.
3. The second method: ordinary pot and pressure cooker.
Add water to red beans, cover about 5 cm high and soak for 8- 12 hours (one night). Remove the floating red beans (with poor quality), remove the remaining red beans, rinse them, put them in a pot and add water to boil, then turn to low heat and cook until they are cooked and soft (about 1-2 hours).
If you use a pressure cooker, when the whistle starts to whine, turn to low heat and cook for 20 ~ 30 minutes.
3. The third method
Red beans: cold water = 1: 4, bring to a boil, turn to medium heat and cook for about 10 minutes, then turn off the fire, cover the lid and let stand. 1 hour later, take out the red beans, put in water and continue to cook, which is the cooked and soft red bean soup.