Roasting is a cooking method that uses dry heat, whether an open flame, oven, or other heat source. Roasting usually causes caramelization or Maillard browning of the surface of the food, which is considered a flavor enhancement. Meats and most root and bulb vegetables can be roasted. Any piece of meat, especially red meat, that has been cooked in this fashion is called a roast. Additionally, large uncooked cuts of meat are referred to as roasts.[1] Also, meats and vegetables prepared in this way are described as "roasted", e.g., roasted chicken or roasted squash.

sorce: Wikipedia

Rye (Secale cereale) is a grass grown extensively as a grain and as a forage crop. It is a member of the wheat tribe (Triticeae) and is closely related to barley and wheat. Rye grain is used for flour, rye bread, rye beer, some whiskies, some vodkas, and animal fodder. It can also be eaten whole, either as boiled rye berries, or by being rolled, similar to rolled oats.

Rye is a cereal grain and should not be confused with ryegrass which is used for lawns, pasture, and hay for livestock.