The rice will continue absorbing broth as the soup sits. If it thickens too much, add 1/2–1 cup extra broth or water when reheating. For brown rice, cook it separately and stir in at the end (or simmer longer). Refrigerate up to 4 days. Freeze up to 2 months (rice texture softens after thawing). Optional topping: a spoonful of Greek yogurt for a creamy tang.