hey i am working on a hard root beer i have made 1 batch where i used 2.6 kg of dark malt extract in a 10L batch with an old time root beer extract 2 ounces of it. There was not much sweetness left in it that i expected the next batch i am going to add about 300g of Maltodextrin for sweetness. Does anyone have any suggestions on what to add it to help with residual sweetness?