Can regular, salted butter spoil if left out on the counter? All my life, my family has just taken a whole stick of butter and placed it in the butter dish to be used, leaving it on the counter with the lid on. It stays on the counter (not refrigerated) until it all gets used up, which usually takes several days.
I never started thinking about spoilage issues until a few months ago, when I read that butter should be refrigerated when it's not being used. It makes sense, since I know most other dairy products spoil fairly quickly when left out, but neither I nor anyone in my family has gotten sick from the left-out butter.
Does the salt stop the butter from spoiling? If no, am I just incredibly lucky that I've been eating butter that's been sitting out for days my entire life without getting sick? Does anyone else leave their butter out?