In Netherlands what is boterham?

In the Netherlands, a boterham is the Dutch word for a sandwich, typically consisting of two slices of bread with a filling in between, but can also refer to a single slice of bread with a topping. The word boterham literally translates to "butter ham", and is traditionally made with butter and sliced meat or cheese, though there are many variations and types of fillings. Boterhammen are a common part of Dutch cuisine and culture and are often eaten for breakfast, lunch or as a snack.