This is a simple table condiment of the sort that I always have on hand all summer long. The chiles are great added to any soup or stew for flavor, and the vinegar itself can be a hot sauce that is perfect over Brazilian greens or just about anything else that can use a savory hit.
MAKES ABOUT 1 QUART
Place the chiles in a quart jar (or smaller jars) with a tight-fitting lid. Mix together the cider and balsamic vinegars and pour over the chiles to cover. Seal the jar(s) tightly and place on a sunny windowsill for 3 days. The chiles will flavor the vinegar.
Open the jar(s) and serve as a condiment or a hot sauce. Once opened, store in the refrigerator.