The lieu-dit Hominis Fides was mentioned for the first time in 1902 and is one of Saint Cosme’s oldest vineyards. It is formed of sandy limestone soils from ancient Swiss ‘fawn sands’ from the Middle Miocene, dating back approximately 14 million years. These soils here have high limestone content. The bedrock, made of hard fawn sands, usually appears less than one metre below ground and, in some places, is flush with the surface, with a maximum depth of 500 metres. The sandy soils and Grenache combination yield a uniquely textured palate and tannin profile. This vineyard benefits from the biodynamic compost fermented and used on the vineyard. Although Miocene sand is a prime type of soil, it is nevertheless low in organic matter and sometimes lacks physical structure. Hominis Fides is primarily planted in Grenache; however, it is also home to a whole array of ancient grape varieties, some of which are unknown. Louis’ grandfather would always replace vines with different grape varieties. Diversity within the same vineyard improves flowering, and with a variety like Grenache, which usually has difficulty flowering, the purpose of this method is self-evident.