Pour 65-70 degree Celsius (149-158F)hot water into the bowl and mix with the cooked rice. *1
Add koji to the bowl and combine them all together well.
Check the mixture temperature to make sure it is around 60 degree Celsius(140F).
Place the mixture into a rice cooker, yoghurt maker, oven, etc. (anything that can keep it at 60c[140F]) and leave it for about 6-8 hours, stirring occasionally. *2
If using Rice Cooker, set the rice cooker for "keep warm" and leave the lid slightly open with kitchen cloth covered on the top.
Stop whatever is used, put the amazake into a pan over medium heat for 5 minutes after it has cooked for 8 hours (do not let the temperature go above 80c degrees). By doing this, it will stop further fermentation process.
Pour it into a sterilized jar and keep it refrigerated for up to about 10 days. *3
Serve hot or leave in the fridge to cool and serve cold!
Koji only
Place Koji in a bowl.
Pour 65-70 degree Celsius(149-158F) hot water into the bowl and mix well.
Check the mixture temperature to make sure it is around 60 degree Celsius(140F).
Place the mixture into a rice cooker, yoghurt maker, oven, etc. (anything that can keep it at 60C[140F]) and leave it for about 6-8 hours, stirring occasionally. *2
Stop whatever is used, put the amazake into a pan over medium heat for 5 minutes after it has cooked for 8 hours (do not let the temperature go above 80c degrees). By doing this, it will stop further fermentation process.
Pour it into a sterilized jar and keep it refrigerated for up to about 10 days. *3
Serve hot or leave in the fridge to cool and serve cold!
Video
Notes
*1 if the rice is cold, the hot water cooled down quickly so need to be hotter. Please adjust.*2 I stir the mixture at 4 hours in, to make sure all fermented evenly. Also check the mixture temperature if it is too low like 40 degree(104F), you may want to reheat to 60 C(140F) but need to be careful not to reheat to over 70C(158F). It will kill koji.*3 It can be stored in Freezer too and will last about 3 months.*4 cooking rice time is not included in the prep and cooking time.