This time-honored example of kitchen thrift is ready when you are: Have it simmering away while you tend to another meal or are puttering around on a Saturday morning. Just looking at it in the refrigerator or freezer will make you happy, secure in the knowledge that you can put a terrific meal on the table in no time at all.
Cooks' notes:
•In place of roast-chicken carcasses, you can use 31/2 to 4 lb wings, necks, and backs from uncooked chickens.
•Stock can be chilled up to 3 days or frozen up to 3 months.
