one 22oz bottle, medium flat rate box, if you can seal the bottle using a vacuum sealer that's great, pack very well
two 22oz bottles in a large flat rate same as above
You can go MFR with two if you want to risk it. I think I used an MFR for reckless.
Don't tell the post office that there is booze in there. In fact, don't even mention liquid.
GhostTown wrote: