VL -
Not my buisness really, but I would suggest that it might be worth talking to them about the curries they cook at home and the differences to the ones they produce in the restaurants.
Maybe even invite them (and their families) around on a Sunday for a curry lunch that you all will contribute to, either in the cooking or preperation.
Building business links is usually a good thing in the long term. You may make a really good friend!!!
Just my 2P
KP(V)