Clean garlic without puncturing inner skin of cloves. Drop garlic into boiling water for about 15 minutes. Remove hens from marinade. Strain marinade and add to brown sauce. Reduce brown sauce until thick.
Place hens in greased baking dish.
Pour on clarified butter. Add garlic cloves and sliced mushrooms. Cover hens with shredded Swiss cheese. Put under broiler at 450 degrees for 20 minutes and 325 degrees for 15 minutes. Remove hens and add juices to brown sauce mix and continue reducing.