Alongside his new Chassagne-Montrachet Domaine, Benoît Moreau has embarked on an impressive project in Beaujolais with a close friend. Together they focus on producing elegant Gamays sourced from 1.7 hectares of old-vine vineyards in Morgon and Chiroubles. These high-altitude vineyards, with the lowest sitting over 400 meters above sea level, are farmed biodynamically—a significant challenge due to the old bush vines rooted in poor granitic soils. Moreau's farming approach relies on meticulous biodynamic practices, with certification currently underway. They manually perform all vineyard work to ensure the health of the vines and the soil. The duo also employs green cover crops to build organic matter, enhance biodiversity and protect the vineyards during hot summer months.

The winemaking process incorporates semi-Burgundian techniques, marking a departure from traditional Beaujolais methods. Fermentation employs indigenous yeasts, whole-bunch inclusion varies by vintage, and no sulphur dioxide is added during vinification. Aging occurs predominantly in amphorae, alongside some 500-litre barrels, to maintain the varietal's freshness and finesse. Aux Gauthiers is located at the top of the slope, 520 meters above the Col du Truges, near the commune of Villié-Morgon. The vines here were planted in the 1940s and 1970s and are typically harvested one week later than Benoît Moreau's cuvées in Chassagne-Montrachet. 

Benoît Moreau also cultivates half a hectare of mature vines in the steep granitic terroir of Chatenay in Chiroubles. Positioned between Morgon and Fleurie at over 400 meters above sea level, Chiroubles boasts the highest vineyards in Beaujolais. Moreau appreciates the transparency of amphorae for this wine, which is transferred to stainless steel after one year. The only L'Arlésienne that ages in barrel is Corcelette, a blend from two high-altitude parcels on the northern side of Morgon. One parcel comprises 0.20 hectares of 80-year-old vines in the Janins climat at 450 meters. The other features 0.25 hectares of slightly younger vines facing south in Truges (adjacent to Chiroubles’ Chatenay). Both parcels are farmed biodynamically, which is rare in this village. In 2021, Benoît bottled these two sites separately, and he may do so again. Unfortunately, due to severe hail damage in 2022, he had no choice but to create a blend for that vintage.