Actor O'Connell planted 800 grapevines on the pair's Calabasas, California estate three years ago and now the couple is beginning to see the fruits of its labour.
Romijn explains, "It's sort of a new thing. We have 800 grapevines that Jerry planted three years ago... and last year we harvested our first harvest and we actually have 15 cases of wine that have to sit for a couple of years.
"I haven't tasted it yet... It could just be headache wine."
The couple recently picked its second harvest.