Rugbrød is a brown rye bread from Denmark, typically used as a base for popular Danish open sandwiches. Usually, it is sliced thinly, buttered, and topped with ingredients such as smoked fish, shrimp, boiled eggs, liver pate, cucumbers, or mayonnaise.
The bread is popular for being low in fat, containing no sugar or oil, and it is also very rich in dietary fiber and whole grains. It can be found at most Danish supermarkets or baked at home, and it comes in a few popular varieties: light rye bread, dark rye bread, sourdough rye bread, and coarse rye bread.