Ingredients
8 small celery sticks thinly sliced
1 onion finely chopped
3 cups water
1 tbsp. plain flour
2 tbsp. light sour cream
2 tbsp. grated cheese
1 tbsp. chopped fresh coriander
1 tsp. lemon juice

Method
Boil the celery and onion in 1/2 cup water in a large saucepan till the onion is soft.
Blend flour in 1/4 cup water till smooth.
Stir gradually into the onion mixture.
When smooth stir in remaining water.
Stir constantly till the mixture boils and thickens.
Reduce heat. Simmer covered for 5 minutes.
Stir in sour cream, cheese, parsley and lemon juice.
Serve hot with garlic rolls or croutons or just plain toasts.