"Ржаным" refers to something made from or related to rye, a type of grain known for its hardiness and nutritional value. Rye is commonly used to produce rye bread, which has a distinct flavor and is darker than bread made from wheat. This grain is often associated with traditional diets in various cultures, particularly in Eastern Europe. In addition to bread, rye is also used in the production of rye whiskey and rye beer. The grain is rich in fiber and essential nutrients, making it a healthy choice for many. Its cultivation is well-suited to cooler climates, contributing to its popularity in regions with such conditions.