This document describes the Business Model of the Thunevin Establishments. Jean-Luc Thunevin, the entrepreneur, is the inventor of garage wines. His first vintage, Chateau Valandraud, has become prestigious and is now classed as a Premier Grand Cru Classé of St Emilion. In about twenty years, this autodidact of the wine sector, who was supported from day one by his companion, Muriel Andraud (also very involved in the business) has built an organization whose estate is estimated at around fifty million euros. This case study will soon be available in the GRP Publishing section.