Kolace/Koláce refer to a round flat yeast buns with a dimpled hollow that is filled with jams, usually Povidla. Kolace is one of the popular sweets from Czech Republic. Likewise, Kolace are small cakes made of white flour with an indentation on the surface for a filling of poppy seeds, plum jam, or sweetened farmer cheese Kolac is the singular form of Kolace.