I love this anecdote from Craig Claiborne, former food editor for the NY Times,
I suspect that vinegar was substituted for lemon juice when not available, just a bit of food anthropology.
“The origin of the name ‘chess pie’ was explained to me on a visit to Kentucky
as follows: A visitor to the South went to a dining establishment. At the time for
dessert, the waitress told him that pie was included. He said he would like apple
pie and she replied that it was not served. ‘Then I’ll take peach,’ he said. No
peach either. ‘What kind of pie do you serve?’ he asked. ‘Jes’ pie,’ she told him.
When in the course of reporting recipes for publication in The New York Times I have mentioned the dessert known as chess pie, the response has always been impressive beyond my wildest imagination. I have been told repeatedly in each
letter that I did not know how to prepare the genuine article. The following
recipe came to me anonymously. It was signed ‘A True Southern Belle.’
http://www.labellecuisine.com/archiv...hess%20Pie.htm