Finally, the chervil soup was obtained through a vacuum
impregnation process, where chervil leaves were immersed
into diluted apple juice and cooked under vacuum at 55 1C for
15 min (Gastrovac, ICC, Girona, Spain). This process allowed
the introduction of physiologically active components, such as
color and fresh aroma compounds, into the impregnating
solution avoiding changes in chervil's aromatic profile as it
would occur if product was conventionally infused at higher
temperature and ambient pressure