The way my mom taught me was first when I was like 7 or 8 she made me and all my sisters observe her and teaching us how to make simple food like rice or fried egg stuff like that then little by little she would level up and by the time we were 10 years old we could already handle a simple meal on the stove. So I would say that it’s up to the parents and how they raised the kids. My mom did all this because she said we would be more independent and not rely or be co dependent of someone else