Term (also décomposition = decomposition) for the sediment that occurs primarily in full-bodied, tannin-rich red wines with barrique ageing. This is a natural process. The deposit is formed by polymerisation and precipitation of substances (tannins and colouring agents, dead yeast) during bottle ageing. This phenomenon is particularly common in wines that have been bottled without filtration. This is typically the case with natural wines, but is also increasingly practised by producers with other wines.

Red wines without decanting: Wine glasses with coarse = Dépot fix (left) and fine deposit = Dépot poudrex (right)
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