Soupe aux Haricots Verts

• Butter for frying
• 2 thick slices smoked bacon, diced
• 1 onion, finely chopped
• 2

Melt the butter in a large saucepan, add the bacon and onion and fry gently until the onions are pale gold. Add the potatoes, green beans, 3½ pints (2 litres) cold water, the savory and pepper. Simme