Phil exactley, a ready prepared curry sauce, they change in colour if the chef addes red chilli powder/tom puree in to the pan to make it richer, redder/simmer longer to make it darker, this is what im trying to explain its a curry all done finished, its added to a pan to get heat hot for you to takeaway or eat in, go to any takeaway and ask for a curry sauce nothing added , youll see what i mean!