Carbonation Influx in New Brewers and FAQs Posted April 29, 2015 That being said, what would cause the influx in foam when I digitally measured the sugar to exactly 4.3g per 16oz bottle? By weight that is less than I use when I use the drops for the same 16oz bottles. Only thing I can think of is the calibration might have been off but I tested that today and it was solid. Something has to be different. I would try to duplicate it but the Hop Head Red IPA is not one of my favorite brews. I will try granulated sugar with half my next batch and half with the drops and see how that goes. Stay tuned!