Russian cuisine is a collection of the different cooking traditions of the Russian people. The cuisine is diverse, as Russia is by area the largest country in the world. Russian cuisine derives its varied character from the vast and multi-cultural expanse of Russia. Moreover, it is necessary to divide Russian traditional cuisine and Soviet cuisine, which has its own peculiarity. Its foundations were laid by the peasant food of the rural population in an often harsh climate, with a combination of plentiful fish, pork, poultry, caviar, mushrooms, berries, and honey. Crops of rye, wheat, barley and millet provided the ingredients for a plethora of breads, pancakes, pies, cereals, beer and vodka. Soups and stews full of flavor are centered on seasonal or storable produce, fish and meats. This wholly native food remained the staple for the vast majority of Russians well into the 20th century.