GRAU BARF Devil’s Claw - dog supplements

I assume that, like many products from Grau, this one is high quality. However, the size/concentration just doesn't work for us. My dog weighs 27 kg, and the amount of powder he's supposed to get according to the instructions can't just be mixed into his food, at least not for us. They definitely could have adjusted the concentration a bit more. I already split the portion into two servings, but he still won't eat it because there's simply too much powder.