If we are talking serious, I always give real advice - that I don't drink, that I eat six meals a day, that I am in the gym every chance I get, and that I have been making sacrifices to live this life for years. No one who asks me can ever say the same.
My answer will always be food and gym time. I started a real bulk before gear and put on 15 lbs. first time I really paid attention to food and it paid off. People asked because it was within 2 months and that was a truthful answer. So now that I'm on, it will be "more food" lol