I agree with pretty much everything Dalia said below regarding food. I think a nutritionist could be a good idea if you can find one who knows about IBS. As far as drinks go... what about iced fruit tea? Some people are sensitive to cold drinks, but raspberry tea is pretty yummy cold. Or I have some Westsoy Soy Shake. It comes in chocolate and vanilla and is really thick and creamy and yummy. It could also be the basis for fruit smoothies. And finally, what about cold chai? Chai is delicious too.