Tannin

A structural compound that creates drying, gripping, or astringent sensations, especially in red wines.

<h2>What it means in wine</h2> <p>Tannins come mainly from grape skins, seeds, stems, and oak. They shape texture and can help some wines age.</p> <h2>Why it matters</h2> <p>Tannin should be described by both amount and feel: fine, firm, chalky, dusty, green, ripe, or coarse.</p>