NIEUWJAARSDAG (New Year's Day) January 1
The first day of the year is set aside as a time for calling on friends, feasting on all kinds of exciting foods (including holiday cakes, breads and waffles), and drinking slemp (or slem), an old fashioned New Year's beverage, made with milk. Among the season's baked specialties are knijpertjes, meaning, literally, "clothespins." This delicacy, a favorite in northern provinces, has been popular since the Middle Ages. Duivekater, another New Year…