- Preheat oven to 475F (240C). If chicken bones are large, use a cleaver to chop into smaller pieces. Place in a shallow roasting pan. Drizzle with a little oil and toss to coat. Roast in preheated oven, turning occasionally, until bones are fragrant and dark, 30-40 minutes.
- Meanwhile, cut off and discard root ends of leeks. Cut leeks in half lengthwise. Fan out under cold running water to remove grit. Chop leeks, carrots and celery. Melt butter in a large stockpot over medium-low heat. Add vegetables, parsley stems, thyme, rosemary, bay leaves, garlic and peppercorns. Stir often until lightly browned, 15-20 minutes. After chicken has roasted for 30 minutes, drain fat from pan and discard. Add bones to pot with vegetable mixture. Pour a little water into roasting pan. Using a wooden spoon, scrape up any brown bits and add to pot. Pour in enough water to completely cover bones, about 16 cups (4L).
- Bring to a boil over high heat, stirring often. Reduce heat and simmer for 45-60 minutes to develop flavour. Skim off any foam that rises to the surface. Stir occasionally. Then spoon out and discard bones. Strain broth through a large mesh sieve into another pot. To concentrate flavour, boil broth to reduce by half.
Cover broth and refrigerate overnight. Then skim off and discard any fat that has risen to the surface. Broth with keep well, covered and refrigerated, for up to 5 days, or divide into smaller portions and freeze for up to 4 months.
Protein 5 g
Carbohydrates 1 g
Fat 1 g
Sodium 3 mg