Baked Vidalia Onions Stuffed with Country Ham and Chanterelles

Vidalia onions, like Walla Wallas from Washington State or Mauis from Hawaii, are some of the sweetest onions on earth and one of the most treasured vegetables of Southern cookery. Grown exclusively in or around Vidalia, Georgia, the onions derive their delicacy from soil with a low sulfur content (sulfur being the culprit that makes most onions so strong). So protective is the region of its valuable asset that each onion (or string sack of onions) must be certified (and tagged) as authenti