I've never really had a go at the vindaloo. Partly because I never know which recipes are authentic. For instance, is it supposed to contain vinegar or not?
Apart from having a go at Chewy's Odds'n'Ends dish, I haven't tried either a traditional or BIR vindaloo. In fact, my local T/As don't even mention the dish in their menus, so I'm looking forward to CH's running commentary and eventual recipe.
BIR vindaloo dishes appear to use either vinegar, lemon juice or tamarind - it seems to be a regional thing - but according to everything I've read on the subject, the original dish was made using vinegar or tamarind and garlic.
I'm currently preparing a pork vindaloo recipe from an Indian cook book which uses malt vinegar and a spice mix in the marinade and a paste containing red wine vinegar in the cooking. BIR it ain't, but I'm keen to try it anyway!
I also looked at a 'traditional vindaloo' from the book
Curry: A Tale of Cooks and Conquerors which, understandably, is much simpler but also uses vinegar and garlic (and a sort of spice mix) in the marinade. I'll maybe try that one at a later date, but for now I'm looking forward to cooking and tasting the more complex recipe.