Following up my previous query, I bought, at the Harvest Coop in Central Sq., Cambridge (MA), some coarse oatmeal and some whole oats. Neither produced snowballs. Perhaps I did not strew them properly. Or perhaps only Staffordshire oats will do.

It seems remarkably difficult to obtain dishes recommended in songs. A Web search some time ago failed to bring up a restaurant that served groundhog, and I would have to go to Mississippi to order possum & sweet potatoes.