Riesling Sweetness Levels Explained: From Bone-Dry to Dessert

A complete guide to navigating the Riesling sweetness spectrum

Updated April 2026 | By expertvin — Belgium's Wine Specialist

Riesling is arguably the world's most versatile grape variety, capable of producing bone-dry wines of crystalline purity, off-dry styles of exquisite balance, and some of the greatest dessert wines ever made. Yet this versatility is also Riesling's commercial curse: consumers who've been burned by unexpectedly sweet Riesling avoid the entire category, missing out on some of the world's greatest wine experiences.

This guide cuts through the confusion. We explain the sweetness categories, teach you how to read German and Alsatian labels, and help you choose the right Riesling for any occasion. At expertvin.be, we carry an extensive Riesling selection from Alsace, Germany, and Austria through our curated selection.

Understanding Residual Sugar

Understanding Residual Sugar

Residual sugar (RS) is the amount of unfermented grape sugar remaining in the finished wine, measured in grams per litre. During fermentation, yeast converts sugar into alcohol. If the winemaker allows fermentation to complete, the wine is dry (typically under 4 g/L RS). If fermentation is stopped early — by chilling the wine or adding sulphur — sugar remains, creating an off-dry to sweet wine.

The Perception of Sweetness

Crucially, sugar perception is not just about RS numbers. Acidity counterbalances sweetness, which is why Riesling can taste balanced even at relatively high sugar levels. A Riesling with 30 g/L RS and 9 g/L acidity may taste barely off-dry, while a wine with 10 g/L RS and only 5 g/L acidity can taste perceptibly sweet.

Sweetness Reference Points

Bone Dry (0-4 g/L RS): Trocken, Alsace standard — no perceptible sweetness

Just Off-Dry (4-12 g/L RS): Feinherb, some Kabinett — a touch of roundness, still predominantly dry

Off-Dry (12-45 g/L RS): Spätlese, some Kabinett — noticeable sweetness balanced by acidity

Sweet (45-100 g/L RS): Auslese — clearly sweet, dessert-adjacent

Very Sweet (100+ g/L RS): Beerenauslese, Trockenbeerenauslese, Eiswein — luxurious dessert wines

Reading German Riesling Labels

Reading German Riesling Labels

German wine labelling is notoriously complex, but understanding a few key terms transforms your buying confidence.

Prädikat System (Quality Levels by Grape Ripeness)

Kabinett

The lightest Prädikat — grapes harvested at normal ripeness. Can be dry (trocken) or off-dry. Low alcohol (7-10%), delicate, and refreshing. The perfect aperitif wine and a magnificent pairing with Asian cuisine.

Spätlese ("Late Harvest")

Riper grapes, more concentration. Can range from dry to medium-sweet. Dry Spätlese is often the sweet spot for quality German Riesling — concentrated enough for complexity, dry enough for food pairing versatility.

Auslese ("Select Harvest")

Hand-selected bunches of very ripe grapes, often with some botrytis (noble rot). Usually sweet, with honeyed richness balanced by Riesling's trademark acidity. Outstanding with foie gras or blue cheese.

The Rarities: BA, TBA, Eiswein

Beerenauslese (BA): Botrytis-affected individual berries — intensely sweet, concentrated, and rare. Trockenbeerenauslese (TBA): The pinnacle — shrivelled, botrytised berries producing wines of almost syrupy concentration that can age for a century. Eiswein: Grapes frozen on the vine and pressed frozen, concentrating sugar through ice crystal formation. All three are expensive, rare, and extraordinarily long-lived.

Key Label Terms

Trocken: Dry (under 9 g/L RS). Halbtrocken/Feinherb: Off-dry. VDP Grosse Lage/Grosses Gewächs (GG): Germany's top-tier dry wines from classified grand cru vineyards — the dry Riesling equivalent of Burgundy Grand Cru.

Alsatian Riesling: The French Approach

Alsatian Riesling: The French Approach

Alsace's Riesling is almost always dry, vinified to full dryness as a matter of tradition and terroir expression. The exception is Vendange Tardive (late harvest) and Sélection de Grains Nobles (botrytis-affected), which are always sweet.

Reading Alsatian Labels

Riesling (standard): Dry. Expect citrus, white peach, and mineral notes with firm acidity.

Riesling Grand Cru [vineyard name]: Dry, from one of Alsace's 51 classified grand cru sites. Each grand cru has a distinct soil type — granite (Schlossberg), limestone (Rangen), sandstone (Kastelberg) — that shapes the wine's character dramatically.

Vendange Tardive (VT): Late-harvested, always sweet but balanced by high acidity. Must reach minimum ripeness levels. Magnificent with spicy Asian cuisine or foie gras.

Sélection de Grains Nobles (SGN): Botrytis-affected berries, intensely sweet and concentrated. The Alsatian equivalent of German TBA. Among the world's greatest — and most undervalued — dessert wines.

At expertvin.be, our Alsatian Riesling selection spans the full spectrum from entry-level to Grand Cru, all carefully selected. Visit 20hVin in La Hulpe or La Cave du Lac in Genval to taste the terroir differences.

Pairing Riesling with Food

Pairing Riesling with Food

Riesling's high acidity and range of sweetness levels make it the most food-friendly grape on Earth. The key principle: match the wine's sweetness to the dish's richness or spice level.

Dry Riesling (Trocken/GG)Sushi, oysters, ceviche, white fish, salads, goat cheese

Off-Dry (Kabinett/Spätlese)Thai curry, Chinese dim sum, Korean BBQ, Tex-Mex, smoked salmon

Sweet (Auslese/VT)Foie gras, blue cheese, spicy Indian food, Moroccan tagine, fruit tarts

Dessert (BA/TBA/SGN)Crème brûlée, tarte Tatin, aged Comté, dried fruit, marzipan

The golden rule: the wine should always be at least as sweet as the food. A dry Riesling with a sweet dish tastes thin and acidic; a sweet Riesling with savoury food is a revelation.