Since I can't use salt, I carmellize onions to get a sweet flavor to my dinners. Just get a little fluid in the pan, I use juice from canned mushrooms. Then turn it up to 8 on the cooker, get it sizzling, and put the diced onions in, and let it go. When the onions start to brown, turn down the heat, and add any meat or other veggies, and when you eat, you will taste a sugary flavor. That's the natural sugar in the onions being released!
I tried Mrs. Dash, and many othe salt substitutes. they suck. This adds flavor, while still being healthy.