Whoops. Lesson time today. Was making ginger beer in two two litre bottles. Split yeast starter 75/25 to see which I preffered. 25 one is doing nothing. 75 one keeps building pressure as desired. Vent some gas every day to keep it under control while carbonating the ginger beer. It felt mighty hard today. Set it down to crack the lid and as soon as I touched the lid, boom. Fack. Probably 500 ml left in bottle, the rest is distributed around my kitchen. Too much yeast. May need to improve my process to include proper over pressure relief valves. From prior experience with pressurized plastic bottles, this one blew at over 100 psi. Lesson learned. Won't be making them inside anymore.