Wine Explained Guide
Wine Serving Temperature by Style: CO2, Esters & Chilling
Guide to wine serving temperatures across sparkling, white, rosé, dessert, and red styles, covering CO2 solubility, aroma volatiles, and chilling rates.
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
Sulfites in Wine: TTB Labels, pH and Bottling SO₂ Limits
Understand the U.S. sulfite label threshold, organic wine claims, pH-dependent molecular SO₂ and the measurements that matter at bottling.
Wine Explained
Champagne vs Prosecco vs Cava: Production Methods, Lees Autolysis, and Sugar Chemistry
Compare Champagne AOC, Prosecco DOC/DOCG, and Cava DO across traditional method vs Charmat secondary fermentation, tirage pressure stoichiometry, lees autolysis, and Mimosa sugar balance.
Bottling and Closures
How to Tell If Wine Has Gone Bad: Oxidation, Cork Taint, and Heat Faults
Identify spoiled wine through closure inspection, A420/A520 browning ratios, and chemical aroma thresholds for acetaldehyde, 2,4,6-TCA cork taint, and volatile acidity.
Bottling and Closures
Wine Bottle Caps: Saranex vs a Tin Liner
AWRI prints overlapping oxygen ranges for Saran Tin and Saranex. The endpoint ratio of those ranges is 2, so one liner is not ten times the other on every cap.
Bottling and Closures
How Long Does Wine Last After Opening? A Guide by Style
Opened wine has no single countdown: compare source-backed storage windows for sparkling, white, lighter red and fortified wines, with the conditions each requires.
Wine Explained
Wine Bottle Sizes Chart: Split to Nebuchadnezzar and Beyond
Compare wine bottle sizes by volume and standard-bottle equivalents, with Champagne names, US fill standards and checks for confusing formats.