When it is a whitecurrant?
Dunno, but I planted 3x redcurrant bushes two years ago, and in the first year I got a few strings of redcurrants which were promptly pinched by the birds. But they were definitely REDcurrants.
Last year the bushes produced quite a lot of berries, and because they were in a fruit cage now, they survived.
Actually they survived until they went rotten in December, because they stayed translucent white all the time. I left them on in the hope that they would turn red.
Although they were fed on well-rotted horse muck, I presume this is a mineral deficiency or something similar? Any ideas out there?