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Screw cap (wine) A screw cap is a metal, normally aluminium, cap that screws onto threads on the neck of a wine bottle, generally with a metal skirt down the neck to resemble the traditional wine capsule ("foil"). A layer of plastic (often PVDC), cork, rubber, or other soft material is used as wad to make a seal with the mouth of the bottle.
Also known as headspace, the unfilled space in a wine bottle, barrel, or tank. Derived from the French ouillage, the terms "ullage space" and "on ullage" are sometimes used, and a bottle or barrel not entirely full may be described as "ullaged". [6] It also refers to the practice of topping off a barrel with extra wine to prevent oxidation.
Digby's technique produced wine bottles which were stronger and more stable than most of their day, and protected the contents from light due to their green or brown translucent, rather than clear transparent, color. [2] These early bottles, usually referred to as "shaft and globe" bottles, evolved into the onion bottle shape by the 1670s.
Traditional method. A bottle of undisgorged Champagne resting on the lees. The yeast used in the second fermentation is still in the bottle, which is closed with a crown cap. The traditional method for producing sparkling wine is the process used in the Champagne region of France to produce Champagne. It is also the method used in various ...
A bottle cap or bottle top is a common closure for the top opening of a bottle. A cap is sometimes colorfully decorated with the logo of the brand of contents. Metal caps with plastic backing are used for glass bottles, sometimes wrapped in decorative foil. Metal caps are usually either steel or aluminum, [1] and of the crown cork type.
Winemaking. Wine grapes from the Guadalupe Valley in Ensenada, Baja California, Mexico. Winemaking, wine-making, or vinification is the production of wine, starting with the selection of the fruit, its fermentation into alcohol, and the bottling of the finished liquid. The history of wine -making stretches over millennia.
Ullage (from the French ouillage) is a winemaking term that has several meanings but most commonly refers to the headspace of air between wine and the top of the container holding the wine. It can also refer to the process of evaporation that creates the headspace itself or it can be used as a past tense verb to describe a wine barrel or bottle ...
Harvesting of cork from the forests of Algeria, 1930. Cork is a natural material used by humans for over 5,000 years. It is a material whose applications have been known since antiquity, especially in floating devices and as stopper for beverages, mainly wine, whose market, from the early twentieth century, had a massive expansion, particularly due to the development of several cork based ...