My mentor's family owned the racetrack here and when concessions were slow his dad kept a box of onions for the sole purpose of smelling up the joint with grilled onions... worked every time he says.
i used to go to this arts and crafts show with my mom when we vacationed in this small lake town when i was a kid. they had a little grill there and everytime they started grilling onions i instantly wanted a burger. it's total classical conditioning. the smell is intoxicating.
i don't eat much butter so when i do, i really like it to be good butter. but i'm not averse to using land o lakes if needed. just none of the stuff that comes in a plastic tube. that doesn't even taste like butter to me.