Chicken bones, or a roast chicken carcass, plus the skin, • boiling water, • carrots, peeled & chopped into cubes, • onion, chopped into small chunks, • pearl barley, • petit pois peas, • whole black peppercorns, • dried rosemary, • cumin, • garlic, peeled, left whole, • cornflour mixed with 1 tbsp cold water, • salt