I am with you there DD, I have tried hundreds of recipes and techniques, with spiced oil or without and while there are subtle differences nothing simply adds the taste. I know some restaurants don't reuse oil some do so to me that can't be the key, it is all skill and practice I am sure, given how many currys a chef would make a night they would likely master the art a lot quicker than us part timers. Saying that I think mine are restaurant quality, do they have the taste, I can't be 100% sure as I am to much of a critic but I know I would prefer one of my own to over half the BIR's in my area and thats good enough for me.