Responses
https://www.mangago.me/read-manga/royal_shop_of_young_lady/
This one? The hair is blue but I think it based on the description.
Yeeeesssss ! Arigato senpai
I'm looking for this manwha about cooking, where the MC is reincarnated in a green haired girl, who has 2 brothers qnd is bullied by her dtep mom at the begining. She turns out to be a good cook, and gains the favor or her grandpa and brothers.