Don't remember where I found this on the web, but here goes:

¼ cup soy sauce
3/8 cup water
2 T liquid smoke
1 T onion powder or some grated fresh onion
1 t garlic powder or 1 clove crushed garlic
½ t ground black pepper
Pinch cayenne pepper
1 T honey
1 lb. firm or extra-firm tofu

Cut and drain the tofu. Cut 1 lb. cube in half, then slice it into strips on its short side. Strips should be about 4-5 mm in thickness. They may look big but they’ll shrink to about ½ their size.

Mix all the marinade ingredients together well. Put the tofu in a single layer in a shallow baking pan or cookie sheet and pour the marinade over it. Let soak for several hours or overnight.

Drain excess liquid (may be reused) and dry tofu in food dehydrator or 200 degree oven. This will take 4 to 8 hours, depending on weather. Flip the tofu over hourly so it dries evenly. Dry until it is very chewy, but not crispy.