Chef Elsa
Apfelkren
Freshly grated horseradish folded with tart apple and lemon, the cold, sharp sauce that belongs beside every plate of Tafelspitz in Vienna and has done for as long as anyone can remember.
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Semmelkren
Created by
Stale bread rolls soaked in real beef broth, mashed smooth and stirred with enough fresh horseradish to remind you what you're eating. The warm, thick sauce that makes Tafelspitz complete.
Sauces & Condiments
Austrian
Dinner Party
Special Occasion
15 min
Active Time
10 min cook•25 min total
Yield6 servings
Gretel always said you can judge an Austrian cook by three things: her broth, her Knödel, and her Semmelkren. The broth tells you about patience. The Knödel tell you about hands. The Semmelkren tells you about timing, because everything depends on when the horseradish goes in.
Semmelkren is the sauce that sits next to Tafelspitz at every proper Viennese table. The name tells you exactly what it is: Semmel, the Austrian word for a white bread roll, and Kren, horseradish. You take stale rolls, soak them in hot beef broth until they fall apart, mash the whole thing smooth, and stir in a pile of freshly grated horseradish at the very end. The bread gives it body. The broth gives it flavor. The horseradish gives it a sharp, sinus-clearing warmth that cuts straight through the richness of boiled beef.
The technique is simple, but the one rule you cannot break is this: never boil it once the Kren goes in. Heat kills horseradish. The volatile oils that give it that beautiful, eye-watering bite evaporate if you let the sauce bubble. You take the pan off the heat, stir in the freshly grated root, and serve it warm. That's the whole secret. In my grandmother Eva's kitchen, I watched Gretel make this faster than most people can find a recipe. A handful of stale bread, a ladleful of broth, a knuckle of horseradish from the fridge. Ten minutes and it was on the table, sharp and thick and exactly right.
This is good Austrian home cooking at its most honest. Four or five ingredients, no fuss, nothing to hide behind. If your broth is good and your horseradish is fresh, Semmelkren will be extraordinary. If either one is poor, there's nowhere for it to go.
Kren (horseradish) has been central to Austrian cooking since the Middle Ages, cultivated heavily in Styria where the volcanic soil produces particularly pungent roots. Semmelkren belongs to the family of warm bread-thickened sauces that Austrian cooks developed as accompaniments to the elaborate boiled beef tradition of the 19th century, when a Viennese Bürgerlich household might serve Tafelspitz with three or four sauces on the table: Semmelkren, Apfelkren (apple-horseradish), Schnittlauchsauce (chive sauce), and warm Preiselbeeren. The bread-thickening technique predates flour-based roux in Austrian kitchens and reflects a practical, waste-nothing peasant tradition that became refined enough for the imperial table.
The technique, the tradition, and the story behind every dish.
Discover Culinary ExplorerIngredients
stale Semmeln (Austrian white bread rolls)
Quantity
3, about 150g total
day-old or older, crusts removed, torn into pieces
hot beef broth
Quantity
300ml
homemade if possible
unsalted butter
Quantity
30g
shallot
Quantity
1 small
finely minced
fresh horseradish root
Quantity
80-100g
freshly grated
sugar
Quantity
1 pinch
salt
Quantity
1 pinch
white wine vinegar or lemon juice
Quantity
1 tablespoon
Schlagobers (heavy cream)
Quantity
3 tablespoons
fresh chives (optional)
Quantity
for finishing
finely cut
| Ingredient | Quantity |
|---|---|
| stale Semmeln (Austrian white bread rolls)day-old or older, crusts removed, torn into pieces | 3, about 150g total |
| hot beef brothhomemade if possible | 300ml |
| unsalted butter | 30g |
| shallotfinely minced | 1 small |
| fresh horseradish rootfreshly grated | 80-100g |
| sugar | 1 pinch |
| salt | 1 pinch |
| white wine vinegar or lemon juice | 1 tablespoon |
| Schlagobers (heavy cream) | 3 tablespoons |
| fresh chives (optional)finely cut | for finishing |
Equipment Needed
- •Small saucepan
- •Fine box grater or microplane for horseradish
- •Wooden spoon or fork for mashing
Instructions
- 1
Prepare the Semmeln
Remove the crusts from the stale rolls and tear the soft insides into rough pieces. You want bread that's at least a day old. Fresh bread turns gummy and won't absorb the broth properly. Stale bread drinks it up and breaks down into a smooth, thick base. That's why Austrian grandmothers never throw away old Semmeln. They end up here, or in Knödel, or in Schmarrn. Nothing is wasted.
If your rolls aren't stale enough, slice them and leave them uncovered on a baking sheet overnight. Or dry them for ten minutes in a low oven, around 100°C. You want them firm and dry, not toasted. - 2
Soak the bread in broth
Pour the hot beef broth over the torn bread in a bowl. Let it sit for five to ten minutes, pressing down occasionally with a fork, until the bread has absorbed the liquid completely and gone soft. The better your broth, the better your Semmelkren. If you've made Tafelspitz, use that broth. It's already done the work for you.
- 3
Soften the shallot
Melt the butter in a small saucepan over low heat. Add the minced shallot and cook gently for two to three minutes until it goes soft and translucent. You don't want any color on it. The shallot should disappear into the sauce, adding sweetness without anyone knowing it's there.
- 4
Combine and mash
Add the soaked bread and any remaining broth to the saucepan with the shallot. Stir over low heat, pressing and mashing with a wooden spoon or fork until the mixture is smooth and thick, like a loose porridge. Some people prefer it completely smooth, others leave a little texture. I like it somewhere between. If it's too thick, add a splash more broth. If it's too thin, let it cook gently for another minute. The consistency should coat the back of your spoon and hold there.
Keep the heat low. You're warming and blending, not frying. The bread base should be warm and creamy, not browned or scorched. - 5
Grate the horseradish
Peel the fresh horseradish root and grate it finely. Do this just before you need it. Fresh horseradish starts losing its punch the moment it hits the air, and the whole point of Semmelkren is that sharp, sinus-clearing bite against the mild bread and rich broth. If your eyes aren't watering, your horseradish isn't fresh enough.
Grate the horseradish near an open window or with good ventilation. Fresh Kren is no joke. It will clear your head more effectively than anything in a pharmacy. - 6
Finish the sauce
Take the saucepan off the heat. This is the most important moment. Stir in the grated horseradish, the pinch of sugar, salt, vinegar, and the cream. Off the heat. Never boil this sauce once the horseradish is in. Heat destroys the volatile oils that give Kren its fire. If you boil Semmelkren, you end up with a bland, bread-flavored paste that has forgotten its purpose. The sauce should be warm, thick, and sharp enough to make you pay attention.
The splash of vinegar or lemon juice does two things: it brightens the flavor and it helps preserve the horseradish's heat for a few minutes longer. Don't skip it. - 7
Taste and serve
Taste it. Adjust the salt, add a little more vinegar if you want sharper edges, more cream if you want it rounder. Serve warm in a small bowl alongside Tafelspitz, with a few snipped chives across the top if you like. Bring it to the table while the horseradish still has its bite. Semmelkren waits for nobody.
Chef Tips
- •Fresh horseradish is not optional. The jarred stuff in vinegar has already lost most of its heat and will give you a flat, acidic sauce instead of the sharp, living warmth you want. Find a whole root at a good greengrocer or farmer's market. It keeps for weeks in the fridge wrapped in a damp cloth.
- •Use the broth from your Tafelspitz. Semmelkren was designed to be made alongside boiled beef, not independently. The same broth that cooked the meat should soak the bread. Everything on the plate speaks the same language that way.
- •If you can find proper Austrian Semmeln, use them. They're lighter and airier than most bread rolls, which means they dissolve into the broth more easily. A good French-style white roll or even a piece of day-old white sandwich bread (crust removed) will work in a pinch, but avoid anything dense or sourdough-based.
- •Make this last, just before you carve the beef. Semmelkren is at its best in the first fifteen minutes after the horseradish goes in. After that, the fire fades. If you must hold it, keep it warm (not hot) in a covered bowl and stir in a little extra freshly grated Kren just before serving.
Advance Preparation
- •The bread can be torn and dried a day ahead. Store uncovered at room temperature.
- •The bread base (steps 1 through 4) can be prepared up to two hours ahead and kept warm. Add the horseradish, vinegar, and cream only at the last moment before serving.
- •Fresh horseradish can be peeled ahead of time and wrapped tightly in cling film, but do not grate it until you are ready to stir it into the sauce. Grated Kren loses its strength within minutes.
Frequently Asked Questions
Nutrition Information
1 serving (about 100g)
Calories
140 calories
Total Fat
8 g
Saturated Fat
5 g
Trans Fat
0 g
Unsaturated Fat
3 g
Cholesterol
21 mg
Sodium
220 mg
Total Carbohydrates
16 g
Dietary Fiber
1 g
Sugars
3 g
Protein
3 g
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