One of our all-time most popular recipes; the Cauliflower, Leek & Gruyere Soup is on regular rotation in our kitchen throughout Autumn and Winter. It's incredibly easy to make and calls for relatively few ingredients, so it's great for a light lunch or a quick weeknight dinner. It also makes a great starter or entree - you can prepare ahead of time and it's always a crowd pleaser. Serve with cheesy toasts for maximum gruyere goodness.    The soup on it's own is is keto-friendly, vegetarian and gluten free.