Ingredients:
Cut the bacon into small cubes. Slice and
finely chop the onion and leek. Melt the butter in a soup pan an gently
fry the bacon, onion and leek until soft.
Add the flour, stirring all the time so that it does not burn. Let this
cook for a few seconds.
Gently add the milk and the water. When this has been thoroughly stirred,
add the mustard ans season to taste.
For an extra lusurious soup: Add a couple of tablespoons of cream with the
mustard.