Rule one: Don’t be precious. If you like a little more vermouth, add it. It’s your mouth. I won’t tell anyone.
Rule two: It must be served ice cold. A lukewarm martini is a crime against humanity. Drink it fast. It doesn’t wait for you.
Rule three: Never, ever add a cherry. A cherry in a dry martini is like wearing a clown wig to a funeral. Just… no.