Wow so many different answers to this question and a lot sound like they could possibly be correct. So tonight I’m going to test the cold beverage theory. Will poring cold soda into my tumbler full of ice result in less fizz bubbles. Up until now I’ve only pored warm soda into the ice fill receptacle.
I will also test the suggestion to used watery ice instead of the cold dry ice right out of the freezer. Will the watery warmer ice result in less fizz. I will use my warm soda along with watery ice to see if I get a different result.
In: Chemistry
The glass and cup you are using are one factor. The cup just came out of a stack, brand new. The glass was probably run through a dishwasher. The residues from imperfect cleaning or rinsing will leave small nucleation sites on the inside of the glass where bubbles will form more easily. More tiny spots for bubbles to form means more foam when pouring.
I know it’s time to clean the dishwasher filter and add some rinse aid when I pour a beer and the glass is half foam.
Temperature, carbonation amounts, a little bit of nozzle physics. But a dirty glass or one with soap residues will cause LOTS of foaming.
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