Apple cider is a natural partner for chai spices: cinnamon, cardamom, cloves, black peppercorns, and fresh ginger. Let everything infuse for an hour, or if you really want the flavor of the spices to come through, chill overnight.
Combine all ingredients in a saucepan; bring to a boil, then reduce to a simmer and cook 10 minutes. Remove from heat. Let stand, covered, 1 hour, or for more flavor, refrigerate up to overnight. Strain. Reheat before serving.