I recently brewed a recipe that called for Carastan malt. My LHBS didn't carry it, so I just used 40 L Crystal. In the finished beer, I'm missing the toffee and toastiness found in the original. Does anyone know of a better substitute? If there aren't really any good substitutes, where is a good place that I can find it online?
Crystal 15L would have been a closer sub I think, even though the carastan is around 30-35L. I don't think there is a real good substitute for it. There aren't a lot of malts like it, and I don't see too many people use it. I put it in an Ordinary Bitter last year and it does have a nice toffee aroma to it.
A combo of C15 and some special roast might get you in the ball park. C40L is more caramel than toffee to me.
In the UK you can buy Carastan in homebrew shops. The main supplier seems to be Baird's malt :
I haven't seen it for sale online though (I will keep looking since I am also after some).