Modern gin production requires only two basic components. The first is a neutral spirit, a colourless and odourless liquid of at least 96% alcohol by volume. The neutral spirit is made using a base of grain—most often barley or corn—mixed with water, which is fermented and then distilled to produce the high alcohol levels. The second and most important components are the botanicals. All gins are made with juniper berries or extracts, with the distinction between brands coming from the amount and combination of other botanicals used. Botanicals commonly used include: almonds, citrus peel or spices such as coriander, cinnamon and cardamom.