Craft it
You need
Make it at (any of these)
Needs a Pal with Kindling. Best:Renjishi (Lv 8), Dupin (Lv 7), Flaracle (Lv 7)
Work: 7,000
A dish made by deep-frying Potato.
Once you start eating, you can't stop. Eating it will make it harder for your SAN value to decrease for a period of time.