Hi Solar
Good man for giving them a go, but don't hold out too much hope. Did you see the ingredients for the classic curry sauce:
Ingredients: Tomatoes 43%, Onions 15%, Water, Vegetable Oil, Tomato Puree 8%, Garlic, Ginger, Salt, Ground Coriander, Paprika, Ground Cumin, Turmeric, Chilli Powder, Mixed Spices (Garam Masala).
Imagine if we made a base with 3 times more tomato than onion, plus added 8% of the total weight with tomato puree. I'm willing to bet that isn't how they do it in their restaurant either, despite the marketing blurb at the top.