Laeotaekhun
Striker
Got a batch of base defrosting now as it happens, been asked to try the butter chicken next.
Obviously, if you're defrosting a batch of base sauce then you will be using Al's recipe this time.
If, though, you're a fan of Butter Chicken then I can, thoroughly, recommend the recipe below which (without doubt) is the best one I've found.
http://norecipes.com/recipe/butter-chicken-recipe
Have a look and see what you think - if you then decide to give it a go you won't regret it.