Jean and Veronique Lionnet have 10 hectares of vines in Cornas and 2.5 hectares in St. Péray. Jean took over the domaine from his father in 1978 and has been heavily influenced by his friend and neighbour Jean-Luc Colombo in his winemaking style. Rochepertuis is his top wine and is named after a craggy rock in the vineyards.

Yields are low for Cornas and the fruit is 100% destemmed prior to fermentation. The wine is then matured for 12 months in barriques, 20% of which are new. The wine oozes sweet, concentrated black fruits and are classic examples of the new wave wines being produced in Cornas today.