It was considered evil to kill living things like animals or fish to eat their flesh. Besides tasting good, it will warm you from the bottom of your stomach outwards. Hearing that advice, the priest began to have a great desire for salted salmon.
Salted salmon is, however, fish.
Something that priests don't eat. The priest didn't know what to do. He finally decided he should send his acolyte on an errand. I'm worried about the cold, so won't you go into town and buy me a salted salmon. I'm going to use for medicine.