The process of manufacture of wines, transforming grapes into finished wine through a sequence of controlled steps. The basic process comprises crushing the grapes, alcoholic fermentation of the grape juices by yeast, clarification, ageing, and bottling, with red, white, rose, and sparkling wines each following different paths on skin contact, temperature, and maturation. Many additional processes may be applied, including maceration, clarification, chaptalisation, and malolactic fermentation, chosen according to style. Hygiene, sulphur management, and temperature control are the technical pillars of consistent quality, and laboratory analysis of sugar, acidity, and microbial status guides every decision from crush to bottle. It is both an ancient craft and a modern food science.