Are these futures?
It might be better to own gold futures instead of pork bellies. That way if you have to take delivery you find a few bars of gold sitting on your lawn and not a huge mound of pork bellies.
On the other hand pork bellies are the same as bacon, so maybe not...
I had never thought about it but yes, taking delivery in gold (or silver for that matter) is much simpler than getting wheat or oil.