Mix the Oyster mushrooms, Veg Liquid Concentrated Base & Cornstarch using a large bowl and place them on to a preheated waffle maker. (This preparation could also be done in a convection oven at 400 F for 8-10 minutes, or until evenly brown & crunchy) Cut into 4 pcs & set aside.
Mix the vegan mayonnaise with mustard and Old Bay seasoning. Divide the sauce in half and fill a clean 2 oz. ramekin & place the other half on to the sandwich itself. Build sandwich with avocado, lettuce, tomato and the oyster mushrooms.
