Fragment of earthenware stove or stain of red earthenware, mortar model, chafing heater fragment earthenware ceramics earthenware glaze lead glaze, hand turned set pierced glazed baked Red earthenware yellow brown glaze inside partially with black spots two ears hole in the wall rotations. Stove or brazier in the form of mortar archeology Valckensteyn Poortugaal Albrandswaard indigenous pottery kitchen cooking stoves heating popping fuel fire Soil discovery: canal at kitchen castle Valckensteyn at Poortugaal now Albrandswaard 1961