It makes loads, especially if you ignore the ;list of ingredients and add a few suitable vegetables, softened in butter before adding (I do). I don't add the fresh coriander because I don't like eating soapy tasting stuff. I have a feeling last time I made it I used some chopped tomatoes too. The mango chutney is essential! Finally, it isn't a balti, of course, but who cares. It's scrummy and that's all that matters!!
Here's the recipe as I have saved it on my hard drive.