Galliano uses vanillin for flavouring and sugar and glucose syrup for sweetening. Flavoured syrups are made by infusing simple syrups with flavouring agents during the cooking process. The packets consist of powdered flavouring and salt. Gentian root is a common beverage flavouring for bitters. It is mainly used as fertilizer and a flavouring agent in some types of liquorice. The Twinings blend contains black tea, orange peel, lemon peel, and citrus flavouring (bergamot). Modern squashes may also contain food colouring and additional flavouring. Additional ingredients that provide umami flavouring can be also added. Dry ginger ale is also sold with a mint flavouring added. It is principally employed in cookery as a condiment and flavouring material. A mixture of sugar, glycerine, colour, and flavouring is heated to . It is also used as a flavouring in liqueurs. No milk, sugar, extra flavouring or cream are involved. Henbane was one of the ingredients in gruit, traditionally used in beers as a flavouring. It is used as a flavouring in food and herbal teas.