Well, it might be a manhwa, I can't remember correctly. I've completely forgotten the name of it and pretty much the entire story.

What I THINK happens is that this girl is isekai'd into a different world where the food is just sort of... bland. I'm not sure if she was a chef or what not, but she uses her skills to make delicious food, and she becomes the maid of this one guy. Er, I don't remember anything about him except he's not what he seems at the beginning. And I think they go together into dungeons, and there MIGHT be a dragon? Sorry for the shitty description, like I said, I don't remember much of it. I hope there was enough for someone to go on. The food thing was REALLY important.

Kinda sounds like I Became the Chef of the Dragon King But idk... There's a few other iseki food stories where the food is 'bland'. They don't all necessarily become maids or contains dragons or whatnot...

• Suterare Seijo no Isekai Gohantabi: Kakure Sukiru de Camping Car o Shoukan Shimashita
• Lady Chef Royale
• Seijo ja Nakatta no de, Oukyuu de Nonbiri Gohan wo Tsukuru Koto ni Shimashita
• Tensei Reijou wa Shomin no Aji ni Uete Iru
• The Housekeeper of the Dungeon

These actually all sound interesting, so thank you for the recommendations, but no, that's not it.

Let me see if I can think of any other details. wracking brains, wracking brains, wracking brains Sniff sniff... anyone else smell anything burning? o_O

So I don't think she's a chef, she just happens to be a good cook, and it's surprising because the food just sucks soooooo much in this world. In fact, I think she's a maid, and she signs a contract with the man who becomes the ML. Forget entirely about the dragons, that may have been an errant thought. I know later on in the story the ML's personality becomes very odd, almost demonic, but I don't know if he's a demon or what. Also, I think they go into a dungeon at least once. That's why I was thinking dragon, I thought she met one in there, but it wasn't the ML.

Anyway, I appreciate you, F_J, those look like great stories, and they are going on my "To Read" list, especially "I Became the Chef of the Dragon King", but that's not what I was thinking of! Thank you, though! ^_^/