Soda-pop semi-flop and ginger beer peculiar

I tried making another bottle of vanilla cream soda, but not the single-bottle method. Instead of putting the sugar and yeast in that bottle, I put them in another bottle (along with orange flavor) and connected the bottles with tubing glued into the caps. The idea was that the bottle of orange soda would use the sugar and yeast to produce carbon dioxide and pressurize both bottles. It didn't work. The air in the bottles and tubing was compressible enough that pressure never really built. I even put some Silly Putty around the tube-cap seal to see if the seals were bad - they weren't.

I gave up and removed the tubing arrangement and put normal caps on both bottles. The orange soda is coming up to pressure. As it sat out quite a while, it might well have a noticeable amount alcohol.

I chilled the vanilla cream bottle overnight and used the tubing setup again. This time with a baking soda and vinegar setup as a carbon dioxide generator. The whole works is in the fridge so that the seal won't be broken until the gas has hopefully dissolved.

( Beer? Well, sort of. )