Wine Explained Guide
What Is Wine Sediment Made Of? Crystals, Pigments and Lees
Wine sediment can contain tartrate crystals, pigments, tannins or yeast-containing lees. Compare the groups and the limits of identifying them by appearance.
Independent Wine Knowledge Guide
Koeppel on Wine
Wine explained from vine to bottle: varieties, aging, closures, labels and what happens on the bottling line.
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VARIETIES & STYLES
Wine Explained
Grape varieties, styles, tannins, acidity, and aging, explained clearly without tasting-note jargon.
Explore Guides →SEALING SCIENCEBottling & Closures
Corks, synthetic stoppers, screw caps, oxygen management, and sealing mechanics on the line.
Explore Guides →WINERY OPERATIONSLabels & Filling
Wine label rules, mandatory statements, and the filling and labelling steps at a winery.
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Labels and Filling
The 75-85-95 Wine Label Rule: What Each Number Actually Measures
What the 75-85-95 wine label rule measures: US TTB minimums for a grape variety, a place name and a vintage year, with two hypothetical labels.
Labels and Filling
Champagne vs Prosecco vs Cava: Methods, Labels and Closures
How Champagne, Prosecco and Cava differ in where they come from, how the bubbles are made, what Brut or Extra Dry means in grams per litre, and why the bottles are sealed differently.
Wine Explained
Wine Aging Explained: Barrel, Tank, Concrete Egg and Bottle
How wine aging works: what oxygen does, how oak barrels, steel tanks, concrete eggs and the bottle compare, what lees aging means, and what aging words on a label tell you.
Bottling and Closures
How Long Does Wine Last Unopened? Storage, Closures and Quality Changes
Wine labels carry no required expiry date, but sealed wine still changes. What research says about temperature, light, humidity, position and closures, plus a simple storage record.