Sarah Warman is Senior Marketing Projects Manager at Scottish craft beer company BrewDog, where she wears the badge of Alpha Dog 2014—the most prestigious of all BrewDog’s accolades. She is also a part-time beer presenter on Channel 4’s Sunday Brunch, Jamie Oliver’s DrinksTube and her own YouTube channel, Hop Topic. She talks to Estelle Hakner about beer, books, and ballsiness