Chestnut Mushroom Consommé

• 2 organic egg whites, refrigerated
• 1 litre (35 fl oz/4 cups

Put the chilled egg whites in a clean bowl and whisk until stiff peaks form. Pour the chilled stock into a clean tall skinny saucepan. Add the whisked whites and gently mix through. Place the pan over high heat and quickly bring to a simmer, being careful not to let the mixture boil. Continue to simmer for 20 minutes to concentrate the flavour. Strain the consommé through a sieve lined with an