Rethinking the ageing process of spirits: Nutshells as a sustainable alternative to wood

Aguardente bagaceira, a Portuguese grape marc spirit (GMS), represents an opportunity for sustainable innovation in ageing process. This study investigates the use of nutshells (almond, hazelnut, walnut, chestnut) as alternative ageing materials to conventional wood. Spirits were aged for six months in 20 L stainless steel vessels (50 g/L, chestnut tested at 12.5 and 25 […]