there's no special receipe for a general purpose solution. some persist on using home made liquers, which are around 40%, others say it's imposible to use 40% alcohol, that you have to use at least 70% one. the decision is up to you, while the receipe is nothing special. it's better if you frize the propolis and grind it fine. this way more will disolve. after you grinded it, don't let it back on room temp or more as it will stick right back together, try to do it in a cool room or outside. well all you have to do now is put aroung 20% propolis into alcohol, meaning 200grams of propolis per 8 dcl of alcohol you have. just let it in a dark room for at least fortnight. that's it, remove what's left in-wax and other parts and voila! you might wanna leave it longer than 14 days, at least i do.
as for other receipes, i would to be grateful if someone posted something about making pattes and other stuff