H.J. Wijsman & Zonen Preserved Dutch Salted Butter in 7.05oz (200g) tin. Wijk En Aalburg-Holland. H.J. Wysman long-keeping canned, preserved through the addition of extra salt, has an unctuous texture and a rich, cheeselike taste. Perfect for baking. Product of Netherland. About H.J. Wijsman & Zonen: H.J. Wijsman & Zonen is the worlds oldest producer of canned butter. Sealed airtight for maximum freshness, their canned creamery butter delivers convenience in the form of extended shelf life and easy distribution without the necessity of refrigeration.