WHEN I FOLLOW THE ONION SOUP RECIPE, THERE IS VERY LITTLE LIQUID LEFT AFTER COOKING. WHAT CAN BE DONE?
You can add additional water after or during the cooking process so that you end up with a quart of liquid broth when all is done. Vitamin C is a water soluble vitamin, so it stays in the water. You can add the additional water, up to 1 quart total, after cooking the broth, when made according to the recipe this is the concentration we are looking for.