Where do u know how to cook?

when we were still young, like 7 or 8 years old, my parents already taught us to cook. we started by cooking rice and frying eggs. and then, everything started from there. my brother finished a 4 year course in hotel and restaurant management and he's very good in cooking. i am a pharmacist but i can say i can cook well. it's important to atleast know how to cook especially when you're far and alone.