This popular beverage is traditionally made from a fermented apple or pear juice. Cider appears in many different tastes, from sweet to dry. Its colour can vary from very dark and sludgy to clean and golden yellow, depending on how much of the apple pulp have been removed between pressing and fermentation. Sparkling cider is the most popular kind, but there is also a still version. It is usually served chilled as a refreshing drink. Similarly to mulled wine it may be also warmed up and mixed with various spices and fruits. Served in this way it is especially popular at various Christmas celebrations and winter festivals. Pour the juice and add sugar into a glass, allowing it to dissolve. Then add the yeast and put fermentation lock on the top of the carboy. Then it should start bubbling to release carbon dioxide as the sugar is being converted into alcohol. Allow the cider to ferment and let it sit for at least 2 months before straining it into bottles.