There are lots of recepies on Internet of butterbeers without alcohol but I don't think exact recepie is given anywhere

Sometimes it does, sometimes it doesn't. It depends on if you put any in it or not

there are multiple different recipes on pinterest, i have saved a couple i came across to. ive tried making it without alcohol and it was really good. delicious, really. you'd be bloody mental if you thought opposite.

It really depends on the recipe you use. Some use alcohol some don't

In the books, it does contain a very small amount of alcohol (though only beings with very weak tolerance are affected, such as house elves). At, say, Harry Potter word, it's basically heated cola.