I am new to home brewing and am still trying to get everything right. This weekend I tried a new recipe for a London ESB which consisted of 9 lbs of extracts, goldings hops, plus 2 lbs of caravienne. I thought the recipe was unusual because the instructions told me to place the caravienne into the cold brewing water at the beginning, and then bring the water to a boil. The caravienne grains were in the wort throughout the whole hour of boiling and ended up in a mush on the bottom of the pot. In every other beer I have made, I steeped the grains at 170 F using a grain bag, then removed the spent grains after a specified time and continued on to the boil. I never boiled the grains.
I boiled them this time thinking that it might be best to follow the recipe.
Will boiling the caravienne instead of just steeping the grains give my beer an off taste of some kind? Is boiling the grains a standard practice or did I just get a bad recipe?
Also, what is caravienne? I can't seem to find much information on that.
Thanks much