Weidmann's unique tradition dates back to butter shortages during World War II.Camille F./Yelp; Kelley B./YelpWeidmann's is regarded as the oldest restaurant in Mississippi.Located in Meridian, it has a tradition of putting peanut butter and crackers on every table.The custom dates back to World War II, when regular butter was harder to come by.Weidmann's restaurant was founded in 1870 by Swiss immigrant Felix Weidmann and has been serving the d…