YOU SAID:
my mom cooks better then your not mom
INTO JAPANESE
私のお母さんはあなたのお母さんよりも料理が上手です
BACK INTO ENGLISH
my mom is a better cook than your mom
INTO JAPANESE
私のお母さんはあなたのお母さんより料理が上手です
BACK INTO ENGLISH
my mom is a better cook than your mom
You've done this before, haven't you.