Wine Advocate: The 2015 Marsau is made by the "better half" of CVBG's Mathieu Chardronnier. It is 100% Merlot from 30-year-old vines planted on clay soil and matured in 30% new oak. It felt a little pinched on the nose at first, a little unresponsive, though with aeration I found a light marine influence tincturing the black fruit and it began to find a (prenatal) voice. The palate is medium-bodied with grippy tannin. There is good weight here: furry textured tannin, but appreciable freshness and a sense of elegance on the finish. Give this 2-3 years in bottle and you will have a fine Francs - Côtes de Bordeaux on your hands. 89 - 91 Points
Owned by the president of Bordeaux negociant, Dourthe, Jean-Marie Chadronnier, Chateau Marsau has been heralded by Robert Parker as "The Petrus of the Côtes de Francs".
Lying at the top of a hill, north-east of the village of Francs, the vineyards benefit from an excellent microclimate, with exceptional sunshine hours. The soils are predominantly clay which suits the Merlot grape variety, with which 85% of the vineyards are planted, very well.