Apologies to the forum for asking questions that had already been answered, that's what the winter flu bug does to you I guess. Anyway did this one yesterday (half scale) turned out really good, its been in the fridge overnight no congealed marg on top but it does have a nice sheen to it, a bit like a red wine/balsamic sauce made with butter for a steak. I wouldn't say it was greasy as some have commented but it is very rich, may need to consider cutting down on portion sizes. Did the banjara stuff as well (stunk the house out) but wow what a combination, the sweetness of the paste balancing out the richness of the base, excellent stuff, do try it. Thanks Panpot and JerryM for all your help.
Regards CoR