Hearty and satisfying. Make this ahead of time and enjoy it as a healthy lunch or light dinner. The pistou really lifts this soup, but it is of course optional. If you are more of a traditionalist, you may just want to enjoy the soup, au natural. This recipe makes 4 large servings or 6 modest ones.
Based on 4 servings, adjust as needed.
Make up the stock with hot water and bring it to a simmer.
Finely dice the leek, carrot, swede and onion and finely slice the savoy cabbage leaves. Add a dash of oil to a large deep pot and once warm, add the prepared veggies (except the savoy cabbage). Allow them to sweat and cook down with a large pinch of salt the bay leaf and fresh thyme. Turn down the heat, place on a lid and cook low and slow for 10-15 minutes until the onions are soft. Make sure you stir the veggies every few minutes so that nothing is sticking or burning. Add in all but half a clove of the chopped garlic halfway through cooking.
Tip in the washed barley and the red lentils, and mix well before pouring in the hot veggie stock and the cabbage. Bring to a simmer and cook gently for 30 minutes until the lentils and barley is tender and plump.
Meanwhile, make the pistou. Into a small blender add the parsley, pine nuts, lemon juice, zest and the remaining garlic, olive oil and the grated parmesan. Blend to a smooth paste and add enough water until it's just about at dropping consistency.
Serve the broth with a spoonful of the pistou on top while piping hot.