@cook @philcolbourn @ThatCrazyDude So I had 2 bottles in the cupboard. one started 2 weeks ago, the other just yesterday. Decided to tip a bit out of each, add some sugar, shake it up. The new one did nothing (as expected). The 2 week one had an immediate reaction to the sugar. And when I shook it up a ton of CO2 was released. Bottle almost exploded in my hand. We shall see how they progress tomorrow.