Soy sauce substitute I'm cooking for a friend that, for medical reasons, must eat vegan, and soy-free.  I was really wanting to make a vegetarian stir-fry for her, but I can't come up with or find any sauce that would be good in a stir-fry without meat nor soy-sauce.  Must be too dependent on butter+soy sauce myself. =P

I was thinking, I'd add mushrooms to the stir-fry to get the umami, use sherry+veggie broth to create the liquid, and using ginger+garlic+salt for flavor, but that seems like it'd be too light. There must be some way to get that dark rich flavor of soy sauce without soy?
You can caramelise onions for making the rich sweet-savoury flavour, but you have to caramelise it slowly, and be very patient...it doesn't get made in 5 minutes.

Also, for something ready-made, Coconut Secret makes a coconut-based liquid aminos that contain no soy, and we got it at Whole Foods.