In a medium saute pan, over medium heat, quickly saute the garlic in hot oil for 3 minutes. Add all of the remaining ingredients except venison steaks and balance seasonings. Brush this warm "dressing" over the venison steaks, covering both sides, and immediately place steaks on hot grill about 6 inches above glowing charcoal. Sear quickly on one side for 5 minutes, then flip steak over and grill 4 to 8 minutes on other side. Remove grilled steaks to a broad platter and cover to keep warm while you prepare their wild mushroom compliment.
Heat the butter and oil in a large saute pan over medium heat; when oil and butter are hot, saute the onions and garlic, stirring continually, for 3 to 5 minutes. Add bear's head tooth mushroom chunks and the cracked peppercorns; stir well for another 5 minutes. Now add the oyster mushroom pieces and remaining seasonings and blend well, simmering for another 5 minutes. Add chicken stock, if necessary, to develop a nice gravy (the amount of stock will depend on how "thirsty" the mushrooms are). Simmer just until the mushrooms seem tender.
Serve the hot grilled steaks with the wild mushrooms spooned over and around them. Garnish with fresh watercress, parsley branches, and trimmed scallions.
Recipe courtesy of E. Barrie Kavasch author "Enduring Harvest"