True, Jos, but how to seal them? I'm not a home brewster, so I don't own a crown capper -- and, for cherry bounce, which is about 40 proof and has a strong flavour, I need re-sealable bottles. Furthermore, I doubt there's a single soft-drink company in southern Ontario that still uses glass bottles in sizes larger than 355 ml, which is the typical single serving in North America.
After a major rummage in the Glory Hole, I came up with three 750-ml swing-top bottles to supplement the three 500-ml beer bottles. They had been down there a while, and one of the beer bottles had been used for be-herbed vinegar, so I had to do some plain and fancy cleanage, but the six bottles turned out to be precisely enough. Note to file: buy a bottle brush.
But -- lesson learned. If I'm to continue making cordial, I must find a reliable source of bottles. I used to accumulate enough Grolsch (and similar) empties over a typical year, but this household's primary beer fancier is now tipping his pint in the afterlife.