Watercress Soup

Ingredients

• 1 splash oil to fry
• 1 small onion, sliced
• 2 garlic cloves, sliced
• 1 large potato, thinly sliced
• 1 l (1.8pints) vegetable stock
• 3 large bunches washed watercress
• 1 pinch sea salt &; fresh ground pepper
• 225 g (7.9oz) cheddar cheese
• 0.5 tsp english mustard
• 1 tsp worcestershire sauce
• 1 pinch of cayenne
• 1 pinch of sea salt
• 1 tbsp single cream
• 8 slices white bread
• 4 slices honey roast ham
• 1 splash oil, to fry