This article presents current research on cooking stone pits in northern Germany and southern Scandinavia and examines their function and interpretation. It focuses on recent findings at the site of Mang de Bargen in northern Germany, which contained pit arrangements in various configurations, including a new circular one. The latest 14C dates from Mang de Bargen suggest that the circular formations constitute the earliest evidence of cooking stone pits known so far. A supra-regional comparison, concentrating on the distribution and dating of cooking stone pits in northern Europe, and an analysis of their content, arrangement, and topographic location allows the author to propose how they may have been used.