"Celery bitters are a long-forgotten cocktail ingredient that add a nice savory boost to martinis, gin and tonics, Bloody Marys, and other cocktails. The fun of homemade celery bitters is coming up with a list of demands for what you want your bitters to be like and then making it so: feel free to play around with adding lemon or orange zest, or herbs like rosemary. Every recipe we publish is tested, tasted, and Serious Eats-approved by our staff. Never miss a recipe again by following @SeriousRecipes on Twitter!..."