Regans' Orange Bitters No. 6 is a cocktail ingredient designed to add complex citrus notes to mixed drinks. With an alcohol by volume of 45%, these bitters provide a concentrated profile that balances the sweetness and spirituous character of various cocktails, including the classic old-fashioned. This 15cl bottle is formulated for use in professional and home bars, offering a reliable way to enhance the flavour profile of drinks made with whisky or other base spirits.