Hi JerryM and SS
Jerry plantain are simply cooking banana and like cooking apples are bitter compared to eating ones, they are also a lot tougher so cook better, they go sweet when cooked. I only mentioned them coz they are popular at my local Asian shops so I thought that's what the BIRs would use but obviously not according to SS, fair enough.
I quite like fruit in (some) curries so if I can get some planain I'll give them a go and let you know how it goes.
SS thanks for the warning re the Pataks, I'll steer clear of any BIR Kashmiri anything in case that's what they've used, can't stand Pataks it always leaves a nasty chemical after taste!
Regards
CoR