Baby marrow and sweet basil soup

Baby marrow and sweet basil soup
Serves 4 1 onion, sliced 1 tbsp (15 ml) olive or macadamia nut oil 12 baby marrows, sliced 2 cups (500 ml) purified water 4 tbsp (60 ml) fresh sweet basil leaves, torn 1 tsp (5 ml) herbal salt, or to taste a pinch of cayenne pepper or freshly-ground black...