I had promised the customers in my pub a curry for our twice-annual beer fest. However I didn't want to go the BIR route as organising a beer fest takes nearly all my time and making bulk BIR would have been too difficult.
So I returned to my curry roots in making a big pot of what an old, battered and deluded recipe book* calls a "sweet & sour balti". The main reason this curry is so quick to cook is "no onions". The main flavours are tomato, mango and cream. With garam masala and garlic giving the other flavours.

I have made this curry in bulk many times using chicken or beef and it always goes down a treat. This time I cooked up 9kg of chicken (which filled up the pictured bain-marie twice) and it all sold very quickly. However my commercial rice cooker blew up so my advertised "Curry & Pilau Rice" become "Bowl of curry"

Happy to post the recipe for 6 servings, 15 or even 40 ish on request

*the recipe book is "Indian" by Shehzad Husain & Rafi Fernandez