Washing the dishes after persimmons -- any secrets?

I don’t know if anyone else has noticed this . . . If I don’t rinse dishes or utensils after eating persimmons, a hard crud forms that seems impervious to dishwashing detergent. Plates and knives come out of the dishwasher with streaks and spots of grey crust.

Does anybody have a solvent that works?

I believe you are seeing the effects of … Kakishibu
probably best to rinse as soon as possible.
Google kakishibu …
Here is one result.


Thanks. When I tried to make a puree from mostly ripe but still somewhat astringent American persimmons, the puree developed a brown crust, which is similar. Maybe the tannins oxidize quickly.