Grilling is the introduction of the meat to a very high heat grill that sears and seals the outter layer of the meat and keeps all the juice and flavor inside the meat. So the outside grills or sears.. and the inside steams itself with the heat. The meat literally makes contact with the grill...
Vegetable Stock will work.
Ginger Ale makes a great stir fry companion. The gingery the better!
The fat of oil will help to crisp the outside of the food, so you might get a bit more mushy to the overall texture, but it will be good.
Apple Cider is good too.
Tahini (or sesame butter)
I...