Syrups, glazes & reductions
Zwetschgenröster
Zwetschgenröster · A traditional Austrian and Bavarian fruit preparation of pitted prune plums (Zwetschgen) gently stewed with sugar, a small amount of liquid, and warm whole spices (cinnamon and clove), where the fruit softens but largely retains its shape. Unlike a Kompott, a true Austrian Röster is traditionally rendered almost in its own juice with minimal added water, distinguishing it as a thicker, more intensely fruit-forward compote-like base used as a reusable accompaniment to sweet dishes.
The formula
500g plums : 100g sugar : 60ml liquid : whole spices + splash of spirit
Austrian classic uses almost no water (plums cook in own juice); Bavarian versions add red wine or grape juice; per krautundrueben.de (1 kg plums : 50–100 g sugar : 150 ml water/grape juice : 2 cl plum brandy : 2 cloves : 1 cinnamon stick : lemon juice).
Identity
- Traditional Austrian/Bavarian fruit preparation (NOT a finished standalone dessert)
- Pitted prune plums (Zwetschgen/Zwetschken) cooked gently so they retain shape
- Distinguished from Kompott by using little or no added water — fruit cooks largely in its own juice
- Whole warm spices — cinnamon stick and clove — are signature aromatics
- Etymology: 'Röster' refers to an older method of slowly roasting the plums in a flat pan without water
- Reusable base component that improves with resting; served warm or at room temperature
Ingredients
| Base | Ripe prune plums (Zwetschgen), pitted and halved or quartered | Use firm, ripe Zwetschgen — not freestone dessert plums — for the correct sweet-tart flavor and shape retention. |
| Sweetener | Granulated sugar (or vanilla sugar) | 50–100 g per 500 g plums; reduce for very ripe fruit or increase for tart plums. |
| Liquid | Water, grape juice, or red wine | Traditional Austrian Röster uses almost none; Bavarian and family recipes (e.g. krautundrueben, cinnamonandcorinander) use 60–150 ml water or grape juice per 500 g plums. |
| Aromatics | Cinnamon stick (1) and clove (1–2) | Whole spices, removed before serving; per krautundrueben.de and brotwein.net. |
| Acid | Lemon juice (½ lemon) | Balances sweetness and helps fruit hold shape; cited in krautundrueben.de and habe-ich-selbstgemacht.de. |
| Flavor | Rum, plum brandy (Zwetschgenschnaps), Port, or red wine (1–2 tbsp / 2 cl) | Added at the end; classic Bavarian versions use Rotwein (Schuhbeck) while Austrian versions favor Zwetschgenschnaps. |
| Aromatics | Vanilla (pod or vanilla sugar) | Optional enrichment per krautundrueben.de and many family recipes. |
Method
- 1Wash, pit, and halve or quarter the Zwetschgen, leaving the pieces intact.Halving exposes the flesh so the plums release juice and absorb sugar/spice while still holding their shape (eatclub.de: 'weich, aber noch ihre Form behalten').
- 2In a heavy pot, combine the sugar with the lemon juice and a splash of liquid (or dry-caramelize the sugar first, as in krautundrueben.de) over medium heat.Dissolving or lightly caramelizing the sugar prevents graininess and builds the sweet-spiced base liquid the plums cook in.
- 3Add the plums, cinnamon stick, cloves, and remaining liquid (water, grape juice, or wine); bring to a gentle simmer.A gentle simmer — not a rolling boil — coaxes juice from the fruit and cooks them evenly without breaking them down.
- 4Poach for 5–15 minutes until the plums are softened but still hold their shape, occasionally basting with the syrup.Röster is defined by intact fruit pieces; overcooking turns it into a sauce or jam-like Kompott.
- 5Remove from heat, fish out the cinnamon stick and cloves, and stir in the spirit (rum, plum brandy, or Port).Whole spices are removed before storing to prevent over-extraction and bitterness; alcohol is added off-heat to preserve its aroma.
- 6Cool to room temperature, then chill; the Röster develops better flavor after resting several hours or overnight.Resting lets the syrup absorb plum flavor and the spices mellow — a reason Röster is considered an ideal make-ahead base.
Techniques that matter
Gentle poaching in minimal liquid
Defines Röster versus Kompott: fruit cooks primarily in its own released juice, concentrating flavor (brotwein.net, habe-ich-selbstgemacht.de).
Dry caramelization of sugar (optional)
Krautundrueben.de melts sugar with lemon juice first to layer a caramel note beneath the fruit.
Whole-spice infusion
Cinnamon stick and clove infuse slowly and are removed before storage, giving clean, balanced spice without grittiness.
Off-heat addition of alcohol
Preserves volatile aromatics of rum, plum brandy, or Port that would otherwise evaporate during cooking.
Variations & derivatives
Austrian classic (no alcohol, almost no water)Austria
Plums stewed in own juice with sugar, cinnamon, clove, lemon — the textbook Zwetschkenröster (brotwein.net).
Bavarian with red wine (Rotweinröster)Bavaria
Uses Rotwein in place of water; popularized by Alfons Schuhbeck (brotwein.net).
With Port wine and cardamomModern / German home cooking
Port replaces wine and cardamom joins cinnamon and clove (eatclub.de).
With grape juice and vanillaModern home cooking
Non-alcoholic family version using grape juice and vanilla sugar (krautundrueben.de, cinnamonandcoriander.com).
With ZwetschgenschnapsAustria / Bavaria
2 cl plum brandy stirred in at the end for an aromatic, traditional finish (krautundrueben.de).
Used in these dishes
Substitutions
- Rum → Plum brandy (Zwetschgenschnaps), Port, or red wine — All are authentic alternatives; omit entirely for an alcohol-free version.
- Water → Grape juice (red or white), or red wine — Common in Bavarian and family recipes; deepens flavor.
- Granulated sugar → Vanilla sugar, or brown sugar in small part — Vanilla sugar is widely used in Austrian home baking; brown sugar shifts the flavor profile.
- Prune plums (Zwetschgen) → Damson plums or other tart blue plums — Only acceptable when true Zwetschgen are unavailable — flavor and pectin differ.changes result
- Whole clove → Pinch of ground clove — Use sparingly (≈⅛ tsp); ground clove is far more concentrated and can turn bitter.changes result
Troubleshooting
Plums have broken down into a uniform sauce
Overcooked or boiled too vigorously, or plums were over-ripe → Use firmer, slightly under-ripe Zwetschgen next time and poach at a bare simmer only until just tender.
Röster is too watery / thin
Too much added liquid or insufficient reduction → Simmer uncovered a few extra minutes to reduce, or next time reduce the water/grape juice (Austrian style uses almost none).
Bitter or medicinal off-flavor
Clove left in too long, or too much ground clove used → Always use whole cloves and remove them before storage; stick to 1–2 whole cloves per 500 g plums.
Too sweet or flat in flavor
Excess sugar, under-ripe plums, or missing acid → Add a squeeze of lemon juice at the end to balance, and taste fruit for ripeness before adjusting sugar (krautundrueben.de uses 50–100 g per kg depending on plum sweetness).