Hallo matey!
Yes - elderberry liquer is gor-geeee-ous and is made in just the same way as sloe gin. Here's how:
1. Buy a bottle of the cheapest gin you can find (the cheaper the better because (a) it's cheap! and ( it's less likely to have a strong juniper aftertaste than a better quality gin)
2. Wash your elderberries (the more the better) and removed from the stalks using a fork. I like to give a few of them a bit of a squashing (not much, just enough to break a few of the berry skins... but not all otherwise you'll end up with a gin and elderberyy juice cocktail!)
4. Put a small handful of blackberries in it too to add sweetness.
5. And here's the important bit: shove 'em in the gin!
6. Leave for two months, giving it a really good shake once a day.
7. Drain off the liquid and strain into another bottle.
8. Quaff!
Tips:
It helps to either use a tinted glass jar or bottle to make it in (I use a giant dark blue glass spaghetti jar with one of those rubber and glass clip lids) or or keep it somewhere completely dark. (The light can react with the fruit and cause it to go a bit "off")
Don't fill it up to the top - leave some space in it.
Every day give it a bloomin' good shake and put it back in the dark.
Be patient - in two months it'll be perfect. I have been known to give in after 6 weeks and it's still yummy, so it's up to you!
Don't be tempted to use vodka instead of gin, vodka gives it a bitter taste.
I don't like using sugars or honey in it because it's not necessary. Put a handful of blackberries in with the elderberries and it'll be plenty sweet enough and they're on the bushes at the same time of year. Or just use the elderberries if you'd like it slightly drier.
And if you can wait the couple of months it takes to infuse really well, it'll be timed nicely for Christmas!
Bishty-boshty, job's a good'un!
By the way, I forgot to mention, the other thing is don't be tempted to keep opening up the jar/bottle and having a look/sniff/sip because repeated contact with the air can cause the fruit to decompose! ( I made that mistake once, but to be honest there wasn't all that much of it left by time it was finished anyway!)
Someone decided last week would be a good time to trim back all the foliage along the towpath near me (Stratford-Upon-Avon canal) and have lopped off all the elderberries, damsens, sloes and blackberries in the process; leaving fruitless stumps instead.
Charming.