Sour Lentil Soup

Yield:	6 Servings
Categories:	Soups

1/2	l	Brown lentils
2	l	Water
1/4	l	Finely chopped spring onions
1		Garlic clove (opt.); crushed
1/2	dl	Finely chopped coriander *
3/4	dl	Olive oil
1/2	dl	Cold water
1	tb	Flour
1/2	dl	Vinegar (or to taste)
		Salt
		Freshly ground black pepper