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Adding tannins to pinotage, and the annual pinotage vintage tasting 8 August 2006
Bisso Atanassov responds to Angela Lloyd's June report of the Pinotage Association's annual young vintage tasting 1. What on earth is 'oak powder'? I have definitely missed something... 2. Why is
the new pinotage vintage tasted so soon? Maybe it's worth following the
Bordelais that taste their en-primeurs in March-April following the
vintage (would be September-October in your part of the globe)? Thus
you'd evade sulphur and unfinished malolactic at least, wouldn't you? Angela replies In fact, the oak powder is not simply pulverised oak and another cheap way of adding oak flavour, but, in this case at least, tannin – you might well be more familiar with that idea. It is a practice particularly widely used in Australia (though most countries allow its use) for clarity, adjusting the tannin content and stabilising colour. The tannin can be prepared either from the wood itself or from galls. Chestnut wood is also used and is cheaper than oak. Apparently it is important to add the powder during the early stage of ferment to ensure it has the desired colour stabilisation effect. To begin with, it is a question of experimenting to see the quantity required. Usually, this involves no more than around 50 miligrams per litre incorporated into the must. This polymerises with the other tannins and the residue eventually settles out, so it is no more necessary to filter for this than for any other purpose. With experience, judgement as to whether tannin additions are necessary can be made on the chemical analysis of the grapes. As regards the timing of the Pinotage vintage tasting so soon after harvest, I asked Marius Labuschagne, PR for the Pinotage Association for a comment. He points out that this is an occasion not to be compared with the en primeur tasting in Bordeaux which has buyers and journalists eagerly rushing in from around the world. Marius says:
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