Glossary A
Acerbo is the Italian word for sour; unripe; green; immature; bitter, as frutto acerbo (unripe fruit )
Acescent means turning sour; readily becoming tart or acid; slightly sour.
Acetic acid refers to a natural organic acid that is used in sugar and confectionery recipes, in pavlovas, as a stabilizer for the eggs, and in royal icing to help the icing set.