Menchi-Katsu
Rolf and Corona run an inn called "The Flying Wheel" together. One day, the two of them swing by Nobu. Impressed by Shinobu's work ethic, Corona asks her to marry her grandson. While she's bewildered and flustered by this sudden proposal, Rolf challenges Nobuyuki to a duel to see which establishment serves better meat dishes. Nobuyuki goes into battle with menchi-katsu, determined to win.
Aired 06/07/2018EP 13 - Menchi-Katsu

Isekai Izakaya: Japanese Food From Another World
Izakaya “Nobu” is a modest establishment, staffed by only two people: master, Nobuyuki Yazawa, and server, Shinobu Senke.
Despite its humble appearance, its entrance is mysteriously connected to an ancient city from another world: “Aitheria.” Nobu’s patrons consist of lazy palace guards, incognito clergymen, and the Waterworks Guildmaster – certainly not your average clientele!
But once they enter Nobu’s doors, they are greeted with the finest alcohol they’ve ever tasted and dishes the likes of which they’ve never seen. With the food plentiful and the drinks flowing, the patrons leave their troubles at the door as they call, “Give me a cold ale, master!”
(Source: Crunchyroll)