Rusk is a crunchy and dry cookie that is made by baking regular bread twice. Kind of like when your mom puts your favorite bread in the toaster to make it crispy. When bakers make rusk, they use special bread that's very dry and hard. This hard bread is then baked in the oven for a long time until it becomes crispy, crunchy and hard. Usually, rusk is eaten with tea or coffee or you can just munch on it as a snack!