Russian cuisine has been formed by climate, cultural and religious traditions, and the vast geography of the nation; and it shares many similarities with the cuisines of its neighbouring countries. Crops of rye, wheat, barley, and millet provide the ingredients for various breads, pancakes and cereals, as well as for many drinks. Bread is very popular in Russia. Flavourful soups and stews include shchi, borsch, ukha, solyanka, and okroshka. Smetana (a heavy sour cream) is often added to soups and salads. Pirozhki, blini, and syrniki are native types of pancakes. Beef Stroganoff, Chicken Kiev, pelmeni, and shashlyk are popular meat dishes. Other meat dishes include stuffed cabbage rolls ''(golubtsy)'' usually filled with meat. Salads include Olivier salad, vinegret, and dressed herring.