Rehydrate TVP by pouring 1 cup boiling water over TVP.  It will only take a minute or two for the TVP to soak up all of the water. Or use frozen, ready-to-use TVP. 

Heat canola oil in a large saucepan and saute TVP in the oil for about 5 minutes, or until it begins to brown. Add taco seasoning and 1/2 water to the TVP. Cook until the sauce is thick. Make tacos as you usually do, serving in corn shells or soft corn tortillas, layered with lettuce, tomato, cheese, onions, and taco sauce or salsa.

You may also make tacos using 1 lb. of crumbled tempe or tofu. Saute in the oil, following the directions above. Yield: 6 tacos.