Several characters mention the existence of cider in ambient dialogue. The brewer in the Wayrest inn, for example. This book also mentions a concoction called milk-and-cider.
There used to be a cider recipe in game (Voljar's Honey Cider or something like that), but I think it was removed.
Just checked on a PC, currently no Ciders in the game....
Which is really strange as Cider is the original alcoholic drink. Being that apples will ferment if you leave them in a tree.