I wonder if there are regional variations (UK-wise) on what each curry actually is

I live very close to Wakefield, Leeds, Bradford and Dewsbury (all very heavily populated with curry houses ;D ) but Jalfrezis as I know them have to be cooked using peas and beaten egg (the beaten egg seems to be added last and sits like scrambled egg through the curry....might not sound nice to some, but trust me, it's delicious!

) I've never ordered a Jalfrezi from any restaurant/takeaway that has not had egg added and believe me over the years that racks up to an awful lot! yet I've never seen a recipe posted anywhere that actually uses them. :-X
It's the same with pathias......a pathia as I know them (and I've never had one that's been any different) has extensive use of mango/mango chutney, again, I've not seen any recipes posted that make them this way, so I have to ask, are all the curry houses I've ever used making curries wrong? I've made pathias using the non-mango recipes and have found them all to be sadly lacking

Is it just a Yorkshire thing?
