Giving out free recipes.. personally I'm not that nice of a person. Not sure if it was mentioned in novel but in this manga, the shopkeeper didnt even offer free food. What a joke.
Great, two recipes for food only known in Japan, one of which sounds disgusting. Squids fermented in their own viscera, that sure sounds like it would be a popular dish in a medieval city, not to mention quick and easy to make! /s