From my experience (I barely got any reclaimed oil in the past but now I get a lot easily without any special procedure) I think the key is to blend very thoroughly the base, add water until getting a thinish soup consistency and do not stir after that, let simmer for about 45-60 minutes and let stand a few more minutes and thats it. It works for me. Btw is the reclaimed oil a healthy thing? I use it all but the appareance is appalling 
Regards

Regards
.
Many thanks for sharing the recipe, i was looking for a korma recipe and I think i will try this one soon.