In article ,
David WE Roberts wrote:

Elderberries and red grape concentrate together make a very robust red wine
which can be converted into a passable ersatz Port with a little cheap
brandy.

Life is too short to drink bad wine!

IIRC traditional proper Port used to be bulked out with elderberries in the
years when the grapes were poor.

Not really. Elderberries make a very 'thin' wine, and were used
far more for colouring - indeed, I have seen them listed as
colouring agents in some modern foods or drinks. You can use them
for the same purpose yourself, though few people do nowadays - they
are a completely harmless and effective dark red colouring agent.

Elderberries and red grape concentrate would make a reasonable
plonk, but it is the latter which would give the wine its body.
Elderberries would also add tannin and similar flavours, if the
grape concentrate lacks those.


Regards,
Nick Maclaren.