Think of it like seasoning for a cocktail; just a few shakes will brighten the flavours. Regan's Orange Bitters No. 6 is made with pure grain alcohol infused with flavourings including orange peel, cardamom seeds, and coriander seeds and tastes of pungent orange oil and exotic spice. This bestselling bitters is a bartender's secret. It's a classic in whiskey drinks like a Manhattan or Old-Fashioned and is delicious in gin cocktails made with citrus juice. Bitters can also be used in vinaigrettes or to finish an orange sauce for duck.