Note: All utensils must be sterilized by boiling for 5-10 minutes prior to use.
- Pot
- Plastic Wrap, Chopstick or bamboo skewer
- Stainless Steel Large Spoon
- Ovenproof pans/containers
- 1-2 Dry soybeans
- 1 spoonful Natto powder (Note: Spoon is provided in every box)
- 2 tsp (10ml) Sterilized water (Boil water for 5-10 minutes, then cool) OR
- 10 natto beans from a commercial natto, placed in cool sterilized water
Instructions:
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- Wash the Soybeans. Soak overnight (at least 9 hours)
- Drain, rinse, and drain soybeans. Cook soybeans until soft. You may boil the Soybeans for 9 hours on the stove or use a pressure cooker until the soybeans are soft enough to easily break with your fingers. When using a pressure cooker, please follow the directions in the manual. If using an Instant Pot, use Manual mode, high pressure, 20 minutes, natural release.
- Drain and put the Soybeans in a pot.
- Dissolve 1 spoonful Natto powder in 10ml water.
- Pour Natto solution immediately over the warm beans. Stir carefully.
- Divide the Soybean mixture into pans/containers. Make a thin layer for each container. Do not add back any mixture that is spilled.
- Cover with plastic wrap, poke holes in the wrap with bamboo skewers.
- Leave pans in an oven/warmer at 100°F (38°F). If your hot is warm, you could leave it out on the counter, but make sure there are no contaminants nearby.
- Place the covered containers in a 100°F (38°C) to 104°F (40°C) oven or warmer. Let the Natto ferment for 22 to 24 hours.
- Remove from the oven or warmer. Place then put it in the refrigerator for overnight.
- Add soy sauce, shio konbu, pickled mustard cabbage and eat with rice.
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Using store-bought natto instead of Natto powder
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- Place approximately 10 natto beans in a container.
- Add 4 Tablespoons of cooled sterilized water to the container.
- Let sit at room temperature for 1 hour.
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