Old fashioned glass, long stir, serve.
My peach liquor is an attempt of freeze distilling.
I 've bought a cheap white wine peach liquor and projected to concentrate it.
In the freezer: the water from the liquor make the stuff freeze. Then upside down the bottle to collect the concentrate. Once the ice seems to melt to much stop the process. Refreeze the concentrate and repeat till it's not freezing anymore.
I did not wait till the mixture stop freezing. I 've indergone the process 4 to 5 times.
You are loosing a lot of volume for sure.
Make sure to be careful with this method depending on which product you use to concentrate since everything gets concentrated even toxic parts...