The McIntosh Red (or McIntosh, colloquially "the Mac") is an apple cultivar with red and green skin, a tart flavor, and tender white flesh. It becomes ripe in late September. It is traditionally the most popular cultivar in Eastern Canada and New England, well known for the pink sauce unpeeled McIntoshes make. It is the superior eating apple and well suited for applesauce, cider, and pies. It is extremely common to find this particular cultivar packed in children's lunches across North America owing to its small to medium size and longstanding reputation as a healthy snack.
Every McIntosh apple has a direct lineage to a single tree discovered in 1811 by John McIntosh on his farm in Dundela, a hamlet near Morrisburg, in Dundas County, Ontario, Canada. He discovered the tree as one of twenty apple seedlings while clearing the farm, which he had just purchased, for first use. He transplanted the seedlings, cultivated them, and only one of them was still alive by 1830. The surviving apple tree lived until 1906.
The Snow Apple, also known as Fameuse, is believed to be a parent of McIntosh. Offspring of the Mac include, among many others, the firmer Macoun (a Jersey Black cross), Spartan (recorded as a Newtown Pippin cross), Cortland, Empire, Jonamac, maybe Paula Red, Jersey Mac.
In popular culture
The McIntosh was also the source of the name of Apple's Macintosh computer.
In an episode of Get Smart titled "Too Many Chiefs" (1965), KAOS master impersonator Alexei Sebastian, pretending to be The Chief, tricks Maxwell Smart with a false new code sign: "I say Apples and you say McIntosh." 
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