I have two 1 gallon batches....
One is: 1 gal apple juice, 1 tsp yeast nutrient and 5 g of Montrachet
The other: exactly the same, but with 1.5 cup of brown sugar.
The one with the sugar has a krausen. I didn't think cider made a krausen. It's approaching the stopper on the jug.
Should I rig up a blow off tube?