I had 3 aubergines (bought for another recipe) but only used 2 as per this recipe, however due to the amount of sauce , and shrinkage from the aubergines, I'd def use 3 next time. Also, once sauce was ready I split it into 2 pots, one for him with the capers in (I can't stand them) and one for me without. But I still loved this recipe, and I think I would add a touch more chilli flakes next time too.