Or, “ode to the carbonator cap.”
Instead, you should use a carbonator cap ($8* as of this writing) and some 1 or 2-liter plastic bottles (free after you drink the seltzer water). While TrailKeg claims superiority over the glass growler, the carbonator-cap-and-PET-bottle (PET = #1 plastic, i.e. a soda bottle) combo delivers in most of the same ways:
- Has CO2 input for carbing the beer and keeping/serving it under CO2.
Here’s where they differ: