Sashimi is a cooked dish. It is prepared using the kitchen inside an upgraded farmhouse.
Note: This recipe can be profitable if using fish worth less than data-sort-value="75">
75g. Saving fish worth less than data-sort-value="75">
75g for Help Wanted quests may be a better option, though, since these quests generally pay triple the fish's base value. (Periwinkle is an exception -- at data-sort-value="20">
20g base price it's more profitable to turn into Sashimi than save for quests).
Gifting
Quests