Don't let the smoked mushrooms stop you. You can easily substitute with sauteed ones. Saute 8 ounces thinly sliced mushrooms over high heat with a little oil until brown, about 5 minutes. Remove from the heat and season with a little salt and pepper. Or, if you like, save a pan. Saute the mushrooms with the garlic for about 5 minutes before adding the shirmp. Then you have a shrimp and mushroom filling to use. Easy.