Isekai Ryūji

In a certain world, seasonings such as salt and sugar are controlled by the nobles, and fine cuisine is restricted. One day, a drunkard with an unfamiliar appearance appears in front of Tina, who works for an oppressive lord. The man, Ryuji, is immediately sent to prison for his disrespectful remarks to the lord, but he declares to Tina, "If you're hungry, I'll cook for you." This is a gourmet manga in which Ryuji brings modern ingredients to another world and goes on an adventure.

(Source: Natalie, translated)