Riesling has a problem that isn’t actually a problem with the grape. The problem is communication.

Pick up a bottle of Alsatian Riesling and the label will tell you the producer, the grape, and the vintage. What it may not tell you clearly — and this is the thing that trips people up more than almost anything in wine retail — is whether the wine is dry, off-dry, or something closer to dessert.

In Alsace, Riesling is made across a spectrum of sweetness that is among the widest of any wine region in the world. Understanding that spectrum is not complicated once you have a framework for it. This is the framework.

Why the Sweetness Range Exists

The long, dry growing season in Alsace allows grapes to accumulate exceptional sugar levels. The winemaker’s choice — when to harvest, how long to leave the grapes on the vine, whether to allow noble rot — determines where on the spectrum the finished wine sits.

A wine harvested at normal ripeness and fermented to dryness is a dry Riesling: all the sugar has been converted to alcohol, and what you taste is the grape’s natural fruit and mineral character. A wine harvested late, with higher initial sugar, may be fermented partially — leaving some residual sugar in the wine — or may carry significant sweetness even after full fermentation given the starting sugar levels. Noble rot (Botrytis cinerea) concentrates sugars further, producing some of the most intensely sweet and complex wines in the world.

The Alsatian classification system attempts to signal where on this spectrum a given wine sits. Here is a spectrum of Alsatian wines from driest to sweetest.

Types of Alsatian Wines to Pay Attention to

1. Alsace AOC (no further designation)

The base appellation. No sweetness designation, no vineyard specification. In practice, most wines at this level are made dry, though this is not guaranteed. This is where the label ambiguity is most acute: the producer’s style and the vintage character will determine sweetness, and the only reliable way to know is to look up the producer or ask your wine merchant. Dry versions at this level are frequently excellent value — clean, varietal, food-friendly.

2. Alsace Grand Cru

Wines from one of 51 classified vineyard sites. Grand Cru must be made from one of the four noble varieties (Riesling, Gewürztraminer, Pinot Gris, Muscat). The classification speaks to origin and quality, not sweetness. Grand Cru wines may be dry or may carry some residual sugar depending on the producer and vintage. The Grand Cru designation is a terroir signal, not a sweetness signal.

3. Crémant d’Alsace

Alsace’s sparkling wine, made by the traditional method from Pinot Blanc, Auxerrois, Riesling, Pinot Gris, and Pinot Noir. Typically dry. This is a separate category from the still wine hierarchy — included here because it represents a distinct, important part of Alsatian wine production.

4. Vendange Tardive (VT) — Late Harvest

Grapes harvested significantly later than the normal picking date, with naturally high sugar concentrations. Vendange Tardive wines may be dry, off-dry, or notably sweet depending on how much of the sugar was fermented. The designation is a harvest signal, not a finished-wine sweetness guarantee. The best VT wines are rich and concentrated but retain enough acidity to stay fresh and age beautifully. Riesling VT is particularly fine — the acidity cuts through the richness and keeps the wine precise.

5. Sélection de Grains Nobles (SGN) — Noble Rot Selection

Grapes affected by Botrytis cinerea (noble rot), harvested individually berry by berry at peak concentration. This is always sweet — intensely, extravagantly sweet — with the honeyed, apricot, ginger, and saffron complexity that Botrytis produces. SGN Riesling is rare, expensive, and extraordinary. It is a dessert wine and a meditation. Serve a small pour alongside a strong cheese — Munster is the regional choice — or simply alone.

6. Edelzwicker

A blend of two or more Alsatian grape varieties. Historically a humble, everyday wine; today increasingly made with care by producers interested in the blending possibilities the region offers. Typically dry, typically affordable, typically underappreciated.

7. Gentil

A specific style of Edelzwicker — a blended wine requiring at least 50% noble varieties. Hugel & Fils produces the most widely known example. Dry, aromatic, and versatile at the table.

The Practical Question: How Do I Know If It’s Dry?

First – check for alcohol content. If abv is closer to 11%, it’s going to be sweet. If the wine is closer to 13%, it’s likely a drier style – but I’ve recently seen 13% abv wines with some sweetness. Don’t be afraid of a little off-dry styles though, as they are incredible with food – particularly the spicier dishes.

What to do next if there’s no clues on the label? The short answer: look for the producer rather than the label designation.

Reliable producers of dry-style Alsatian Riesling include Trimbach (their Clos Sainte Hune and Réserve Personnelle are benchmarks of dry precision), Hugel (dry-leaning), a good Alsatian Riesling producer (our week’s lead bottle), and Zind-Humbrecht (who labels residual sugar levels explicitly on the back label — one of the most useful practices in the industry). Domaine Weinbach’s entry-level Riesling is made in a range of styles; the Cuvée Colette is the drier expression.

A back-label residual sugar number below 5 g/L is generally experienced as dry. Between 5–12 g/L is off-dry territory — you may or may not perceive sweetness, depending on the wine’s acidity. Above 12 g/L the sweetness becomes perceptible to most palates.

When in doubt, ask your wine merchant. The question “is this dry?” is not an embarrassing question. It is a useful one, and any good merchant will answer it without hesitation.

Why This Matters

Understanding the sweetness spectrum in Alsatian Riesling is not about memorizing a classification system. It is about having a framework that lets you choose intentionally — to seek out the dry wines for the dinner table, the late-harvest wines for cheese, the SGN for the rare occasion that calls for it.

The same grape. Many different expressions. This is what wine regions do when they have the depth and the geological diversity to do it. Alsace has both.

Read the companion post: Dry Riesling — What It Is and Why It Matters

Join the conversation in our community: Expand Your Palate: One Sip at a Time.