Before making any meringue in the Thermomix, it is important to do a vinegar clean of the bowl and butterfly to ensure there is no fatty residue which will affect your meringue … to do this follow this simple process: add 1 litre water and 30g white vinegar to ™ bowl / heat 10 minutes / Veroma / speed 2. Rinse out bowl in cold water and ensure it is dry before commencing recipe.