Grumpy George is cider from Krnov made by George. When George used to work in Britain, he had grumpy mornings and his friends started calling him Grumpy George. When he started making cider, he used the nick name for it.
There is no carbon dioxide added - the cider is made according to an Old English recipe and is bottle matured for two years. It also stinks like Moravian cellar. But the taste is exceptionally good.
There are two variants: Sweet is sweet and sour. Dry is not sweet at all and is super sour. InCider Bar recommends starting with Sweet and only then moving to Dry.