Sturmer Pippin was discovered in the early 19th century in England, and became an important variety in the Victorian England. It is an excellent keeper - an important quality in the era before refrigeration was widespread.
When picked in late fall the flavor is sharp and acidic - ideal for those who like their apples to be sour. It mellows and sweetens during storage, to become the perfect winter apple.
The acidic flavor and dense flesh is reminscent of Granny Smith, although it is not thought to be related.