What days are they open?

All ten are open Saturday. Three of them are closed Monday and Tuesday.

Do I need a reservation?

Domaine A takes walk-ins. Norton Estate Wines, Chandon and Caroline Cellars Winery ask you to book ahead.

Posted tastings run $5 to $220, with Caroline Cellars Winery at the low end.

Mendoza, Victoria, Yountville and Tasmania.

TASTEMAKERS

Mendoza's heavyweight hitters, hand-picked by the people who literally represent them.

10 wineries