They answered my email: Thank you for sending us your question about the Genmai miso. It may look strange but the miso is just still eatable. Because the product is not pasteurized, it is possible that the product may continue to ferment. This may cause yeast globules to form. The yeast is not a contamination but occurs naturally in the miso. We advise you to remove the yeast globules before eating the miso because they have a yeasty taste which is not a very pleasant taste. When you have any further questions, please let us know.
2 comments
I haven’t seen miso looking like that before but I am no specialist. Looks like some kind of mold to me
Edit; on this page it says you can still eat miso after removing mold… https://cookingwithkoji.wordpress.com/2013/05/08/molds-in-miso-3-months-later/
I wouldn’t do it though, looks gross as hell
They answered my email: Thank you for sending us your question about the Genmai miso.
It may look strange but the miso is just still eatable.
Because the product is not pasteurized, it is possible that the product may continue to ferment. This may cause yeast globules to form. The yeast is not a contamination but occurs naturally in the miso.
We advise you to remove the yeast globules before eating the miso because they have a yeasty taste which is not a very pleasant taste.
When you have any further questions, please let us know.