It's important to look for very ripe Hachiya persimmons — they are incredibly astringent and tannic when not at their peak. The fruit should feel like a water balloon when squeezed and appear almost translucent.
Active time: 5 min Start to finish: 5 min
Cooks' note:
Purée keeps, chilled, 3 days (cover surface with a round of wax paper, then cover bowl with plastic wrap) or frozen 1 month in an airtight container.