Maybe a better question is, what srm gives that cant-see-nothin'-through-it color I'm looking for?
Idk where the line is, but 33SRM is black as night
They're using a different scale if it's that high. Black is black...
Most likely Sinamar but I'll note that 10% roast barley in a stout gives me 84 SRM. Not much light comes through that.
You're looking for Carafa III Special. It's dehusked so you don't get the astringency.