Hi Wayne, good to have you started on the real thing!
You can do with a acid testing kit, basically dilute fruit with water
until acid level is 0.65% Turns out roughly 2 kg blackberries per 5 l
wine here (in UK). Depending what level it is after fermentation it
needs 1-2 year to mature.

Rene.

"Wayne P" > wrote in message >...
> Hi All,
>
> Getting ready to start my 2nd ever batch of wine. I have some blackberrys in
> the freezer that we picked in July-August. Any gotchas not mentioned in
> recipes specific to blackberries? My first batch turned out ok. It was a
> kit wine.
>
> Wayne