Porter's Perfection is an heirloom English apple that has been around since the 19th century. It was not widely propogated until 1907, when it experienced a boom in production for cider. Not as popular today as it was in the early 1900s.
The apple has dark red flushed skin with the peculiar tendency to produce pairs of fused apples. Yields a highly acidic, sharp juice with low astringency. Produces a bittersweet cider and is mnostly used for blending.
Porter's Perfection ripens in November in upstate New York. The tree is vigorous and a heavy cropper, tends to biennial bearing. Hardy to zone 5.