I think you can have either single or double, I use single in my coffee but it does have a slightly higher carb count than double. Not a problem if you're counting the carbs though.
I've heard really bad things about the "organic" meat industry, personally I think it's cruel to keep animals and not give them medicine when they get sick or infected, just my opinion but I can't imagine the "organic" egg trade is any kinder to their chickens.