Shaker lemon pie

Shaker lemon pie, also known as Ohio lemon pie, is a fruit pie typical of the Midwestern United States. Shaker lemon pie is notable in that it uses all parts of the lemon except for the seeds. The pie was first made in the religious communities of Shakers during the early 1800s. Their success at fruit-growing led to the development of what has been called "a veritable calendar of pies" In the Midwestern climate, however, lemons could not be grown, and cookbook author Caroline Piercy writes that "according to old accounts, lemons were the first food ever purchased by North Union." Two versions of the lemon pie developed, one resembling a standard lemon meringue pie, the other, more frugal version using the whole lemon.

Source: Wikipedia