Leek, potato and kale soup

SOURCE This recipe comes from Beach House Kitchen . We have tweaked the recipe very slightly and made some of the steps more explicit for the novice cook. Serves 4 as main course, 8 as starter Time (approx) : preparation 20m cooking 30m Ingredients 1 tbsp vegetable oil 750g leeks 1.25kg potatoes 1.5 litres vegetable stock* 1 tbsp fresh / 1 tsp dried sage** 1 tbsp fresh / 1 tsp dried rosemary** 1 tbsp fresh / 1 tsp dried thyme** 2 bay leaves 200g kale leaves 250ml single cream or milk Salt and black pepper (optional: to taste) * Mix 2–3 tbsp Seven Acres vegetable stock concentrate with 1.5L water . ** If these herbs are not to hand, use others that would blend in well, e.g. parsley, coriander, tarragon. Equipment Chopping-board Knife with a sharp blade Plastic or wooden spoon or spatula for stirring Large saucepan. Blender or food processor. Facilities A hob or other direct heat source; space to chop. Advance preparation None required. P...