Alex Day started going to Death & Co. as a customer, when he lived around the corner and was a manager at the Back Room. “I was almost a groupie of the bartenders at the time,” he tells us. Six months ago, he crossed over to the other side of the bar, and now the menu features one of his drinks, the Light & Day — a mingling of gin, orange juice, maraschino liquor, and yellow chartreuse. He hopes to add to that when the staff brainstorms the spring cocktail list this week — in the meantime we thought we’d talk to him about cocktail culture.