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Meanwhile, heat oil, add cumin, coriander, chilli and turmeric and fry gently for 1 minute. Remove from heat, stir in lemon juice and salt to taste.
Puree soup (in batches if necessary) in blender/food processor. Return to the saucepan, add spices and rest of stock, and simmer for 10 minutes.
Add soya milk, taste, and adjust seasoning as necessary. Stir in chopped coriander and reheat gently. Serve.
posted by Juliet