Makikomare Ryouriban no Isekai Gohan

Kaburagi Rin is suddenly caught up in a saint summoning and transported to another world. Since there are already two saints in the castle, Rin decides to become independent and starts working at a diner on the outskirts of town. However, the food in this world is simply awful. While the manager says, "Effect is more important than taste!", Rin, who wants to eat delicious food, begins to struggle to improve the diner. Gradually, her cooking begins to influence those around her...?

(Source: Kadokawa, translated)