I have some dried malt extract that’s been sitting in the basement for mumble years. It’s turned into a brick. Is it safe to use this in brewing a new batch of beer?
I realize that it may have picked up flavors from the basement, but is it otherwise safe to use? Elsewhere I’ve seen references to DME having a shelf life of a year. Why is that? DME is nearly all sugar, isn’t it? Elsewhere I read that DME might have 4–5% protein and a tiny amount of fat. Can anything happen with these to affect the flavor or safety of the beer made from it?