Varenyky or pyrohy are dough pockets filled with potato, or potato and cheddar cheese,or kapusta (sauerkraut), or cottage cheese, or blueberries, or cherries, or... Ukrainian varenyky are boiled and resemble to various degrees Polish pierogi, Russian pilmeni, Italian ravioli, Jewish kreplach, or Chinese wonton. Varenyky are very often served with onions and sour cream. The word "varenyky" is used throughout Ukraine. The singular form of "varenyky" is "varenyk". The singular form of "pyrohy" is "pyrih". The word "perogies" is a Canadianization/Americanization of "pyrohy".