Blackberry Wine

Today I went blackberry picking. In our favourite spot by the river, cul-de-sac so very little traffic. Forgot to take any piccies (sorry). Anyway I got 3.5 kg of berries in 2.5 hours, and despite being careful also got a number of nettle stings. So that's enough berries for 2 gallons of wine.

There were still heaps of berries left that hadn't ripened yet, so I'll be back there soon. Not sure whether to do a mixed blackberry & elderberry with them, or do another straight blackberry but vary the yeast only to learn a little something.

While picking I found this bush with berries/currants on it. Anyone know what it is?

I'm pretty sure it's not blueberry, the leaves come off the branches opposite each other (not staggered). Didn't check for sap or the smell of crushed leaves. The berries themselves were full of juice/pulp - green/yellow - and seeds.