Martini & Rossi Sweet Vermouth is an iconic Italian fortified wine crafted from wine fortified with brandy and a proprietary blend of botanicals including coriander, chamomile, and sage. With a heritage dating back to 1863 — the recipe developed under the inspired nose of Luigi Rossi — it remains one of the most recognized sweet vermouths in the world. Costco sells this in a case of six 750ml bottles.

At 15% ABV, this Rosso-style vermouth delivers a rich, layered palate of herbs, ripe fruit, tobacco, and underlying sweetness. It is the benchmark choice for classic cocktails such as the Manhattan, Negroni, and Rob Roy, and works equally well in cooking and baking applications. Rated 4.6 out of 5 stars across hundreds of reviews for its balance and versatility.