Akvavit is distilled from either grain or potatoes. After distillation, it is flavoured with herbs, spices, or fruit oil. Commonly seen flavours are caraway, cardamom, cumin, anise, fennel, and lemon or orange peel. Dill and grains of paradise are also used. The Danish distillery Aalborg makes an akvavit distilled with amber. The recipes and flavours differ between brands, but caraway is typically the dominant flavour. Akvavit usually has a yellowish hue, but this can vary from clear to light brown, depending on how long it has been aged in oak casks (Norway) or the amount of colorant used. Normally, a darker colour suggests a higher age or the use of young casks, though artificial caramel colouring is permitted. Clear akvavit is called taffel; it is typically aged in old casks that do not colour the finished spirit or not aged at all.