Margerum Wine Company's Red Blend from the Los Olivos District is a Rhône-style blend sourced from Santa Barbara County, California. The internal designation "Rouge" (French for red) identifies this as Margerum's flagship M5-style red blend, modeled after the great wines of Châteauneuf-du-Pape in France's southern Rhône Valley.

The blend draws on five classic southern Rhône varieties — Grenache, Syrah, Mourvèdre, Cinsault, and Counoise — with Grenache forming the dominant foundation. Grapes are harvested from low-yield sites in the Los Olivos District and fermented parcel-by-parcel before being aged in mostly neutral barrels and large puncheons, with a small proportion of new French oak, preserving fruit purity and site character.

The wine opens with aromas of dark raspberry, plum, blueberry, rose petal, lavender, cinnamon, and savory chaparral brush. On the palate it is medium to full-bodied with juicy black cherry and blueberry, layered with currant, soft bramble, peppery spice, and roasted herbs. The finish is fresh and balanced with finely integrated tannins.

This versatile, food-friendly red has earned strong critical acclaim, with scores of 94 points from Wine Enthusiast, 91 points from Wine Spectator, and 90 points from Jeb Dunnuck.