I begin to turn to soup when the weather outside turns a bit crisp, and I keep right on making and eating hearty, healthy, warming soups all winter long. This is an adaptable soup. Instead of the swiss chard, you could substitute any dark greens (spinach, turnip tops, radish tops, mustard greens, etc.). You could also substitute beans and/or rice for the potato; add fall veggies like sweet potatoes or squash; etc. Unless you're veggie, don't leave out the bacon. Smoked, cured pork products paired with leafy greens are one of life's simple luxuries.