The kolach, or kolache in plural form, is a type of round pastry that originated in central Europe. This bakery item is typically sweet and filled with fruit preserves and nuts or poppy seeds, but savory versions with sausage or cheese are not uncommon.
Although it's difficult to pinpoint exactly where kolache originated, they are primarily eaten throughout the Czech Republic, Slovakia, Poland and Hungary, where they are traditionally served at weddings. The term "kolach" comes from the Czech word "kola," which means "wheel." Kolache are easily found throughout the southern United States as well. According to Edible Austin, the pastries became popular around the 1850s when Czechoslovakian immigrants started settling in Texas, and they have become a staple snack throughout the region.