Onions pickled in vinegar and sugar of some form exist in many different countries and cuisines. These are a bit creamier with the addition of sour cream.
Potato Salad is believed to have originated in Germany and spread throughout Europe, Asia and then made its way to North America, but……some believe it was introduced to the Europeans by the Spaniards returning from the New World in the 16th Century! Initially tossed with vinegar, oil …