Hickory Smoked Vinasoy.

Makes 10 ounces.  (The size of the bottle I use.)

1/4 cup soy sauce.  I've used Kikkoman and Tamari.  Either one.
1 cup apple cider vinegar.  (Other vinegars OK.  *Really* cheap balsamic
didn't work well, though.  Really good balsamic doesn't need soy or smoke.)
1 tsp liquid smoke.

That's it.  The soy and vinegar smooth each other's rough edges, and the
liquid smoke offers a good BBQ'ish flavor.  When I'm using nutritional
yeast, I'll pour a little vinasoy onto the yeast.  Seems to work out well.