RE: Mr.Yoshida's Sauce
The recipe I got from a buddy of mine, Kevin Thull, is awesome and fairly similar to one mentioned above.
Take 1/3 equal parts of Sweet Baby Ray's BBQ sauce, dark beer, and soy sauce.
(After adding the soy sauce and BBQ sauce together, it's basically Yoshida's.)
Add cut up 2" x 2"venison chunks, sirloin, or wild turkey breast chunks and place them in sealed container. Cover with mixture and put in fridge overnight. Skewer or toothpick a 1/2 slice of uncooked bacon around each piece and grill until bacon is crispy and done.
For the veni and the turkey breast, I use the par cooked bacon from the store...otherwise they'll be too dry by the time the bacon is done.
Duck breast works too.....with the regular uncooked bacon.