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Wine Production : Vine to Bottle - Vinum Vine

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53<br />

be open <strong>to</strong>pped or closed, with a sealable hatch lid and fermentation<br />

lock. Variable capacity vats are also available and are useful even<br />

when only partly filled. These have a floating metal lid, held in place<br />

by an inflatable plastic tyre at the perimeter. Fibreglass vats are occasionally<br />

used as a less costly alternative <strong>to</strong> stainless steel.<br />

Although in the late twentieth century many producers replaced<br />

their wooden vats with stainless steel, wood is again gaining popularity<br />

as a material for vat construction at some small and mediumsized<br />

wineries. The difficulties of maintaining and sanitising the vats<br />

are ever present, but there is less risk of the wine being affected by<br />

reductivity, as will be discussed in Chapter 17. Illustrations of wineries<br />

containing various vats are shown in Figs 8.2 and 8.3.<br />

CHAPTER 8

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