1. Combine all ingredients except water in 6-quart (6-L) kettle. Add enough water to cover solids by 2 inches (5 cm). Heat over medium-high heat to boiling; reduce heat to low. Simmer, uncovered, 30 minutes.
2. Strain broth through sieve or colander lined with several thicknesses dampened cheesecloth; discard solids. Broth can be refrigerated, covered, up to 2 days or frozen up to 2 weeks