Hi Mark, Well done with your experiments, although I knew it would come up trumps for you! Cooking a curry the night before you eat it is always the way to go too as Iit improves in taste ten times over. With regard to the spiced oil, I usually reclaim it once or may twice a week. I usually make a prawn pathia (phall hot), a prawn dupiaza (vindaloo hot) and a tarka dhal and maybe bombay potatoes. I tend to cook these dishes most of the time as they area our faves. The oil initially takes on flavours when it is cooked when gravy is made and then will only take on other flavours from dishes that you cook with it. So, ten different people can re-use oil and then reclaim it, but, they will be all very different to each others depending on dishes they have produced with it. Do you see what I am getting at? It is amazing when you start first cooking a dish when you use the spiced oil though isn't it?