Chef Klaus
Allgäuer Käsesuppe
The Allgäu's Alpine cheese soup works only if the Bergkäse melts gently off the heat, where it turns smooth instead of stringy.
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Schwäbische Brotsuppe
Created by
A Swabian larder soup where stale rye does the thickening itself: roast the crusts dark, simmer them low in good broth, and finish with chives, not a packet.
Soups & Stews
German
Budget Friendly
Comfort Food
15 min
Active Time
35 min cook•50 min total
Yield4 servings
Schwäbische Brotsuppe is larder cooking from the south-west, the soup you make when the bread heel has gone hard and Lent, a Friday, or a thin purse says the pot will be plain. It belongs to Swabia, where a mixed rye Bauernbrot earns its keep down to the last crust. Weggeworfen wird nichts, nothing gets thrown away.
Every region argues with old bread differently. In Swabia I roast the dark crusts and let them collapse into broth until the soup thickens on its own; in Bavaria and Austria you see beer, bacon, or crisp cubes kept on top. Im Norden anders, im Süden anders. Das ist kein Bierzelt.
The deciding move is the roasting. Pale stale bread swells into a grey paste; bread roasted dark gives you rye bitterness, nutty edges, and starch that loosens slowly into the broth. Then runter mit der Temperatur, low simmer, because a hard boil beats the bread into glue before the flavour has time to come out.
I finish it with chives, a touch of vinegar, and browned butter if the calendar allows it. The bowl should be creamy without cream, dark from the crust, bright at the end. Schön ist, was schmeckt.
Bread-thickened soups belong to the medieval German habit of sops: stale bread was soaked into broths and sauces when bread was the daily staple and waste had no place in a poor kitchen. The Würzburg manuscript Das Buch von guter Speise, copied around 1350, shows bread used repeatedly as a binder in German-speaking cookery, long before the potato became the everyday thickener after the eighteenth century. In Swabia, Brotsuppe stayed tied to the fasting calendar and the farmhouse larder: meatless broth for Lent and Fridays, bone broth on ordinary days when the Sunday bones had already done their first work.
The technique, the tradition, and the story behind every dish.
Discover Culinary ExplorerIngredients
stale dark rye bread or mixed rye Bauernbrot
Quantity
250g
crust-heavy, torn into 2cm pieces
rapeseed oil or butter
Quantity
2 tablespoons
divided
yellow onion
Quantity
1 large
finely diced
garlic clove
Quantity
1
finely chopped
caraway seeds
Quantity
1 teaspoon
lightly crushed
homemade vegetable broth, or light bone broth outside Lent
Quantity
1.2 litres
hot
bay leaf
Quantity
1
dried marjoram
Quantity
1 teaspoon
freshly grated nutmeg
Quantity
1 small pinch
white wine vinegar or cider vinegar
Quantity
1 to 2 teaspoons
salt and black pepper
Quantity
to taste
chives
Quantity
3 tablespoons
finely sliced
butter (optional)
Quantity
1 tablespoon
for browning and spooning over
| Ingredient | Quantity |
|---|---|
| stale dark rye bread or mixed rye Bauernbrotcrust-heavy, torn into 2cm pieces | 250g |
| rapeseed oil or butterdivided | 2 tablespoons |
| yellow onionfinely diced | 1 large |
| garlic clovefinely chopped | 1 |
| caraway seedslightly crushed | 1 teaspoon |
| homemade vegetable broth, or light bone broth outside Lenthot | 1.2 litres |
| bay leaf | 1 |
| dried marjoram | 1 teaspoon |
| freshly grated nutmeg | 1 small pinch |
| white wine vinegar or cider vinegar | 1 to 2 teaspoons |
| salt and black pepper | to taste |
| chivesfinely sliced | 3 tablespoons |
| butter (optional)for browning and spooning over | 1 tablespoon |
Equipment Needed
- •Heavy 4 litre soup pot
- •Rimmed baking sheet
- •Wooden spoon or balloon whisk
- •Ladle
Instructions
- 1
Roast the bread
Heat the oven to 180C. Spread the torn rye bread on a baking sheet and roast for 12 to 15 minutes, turning once, until the crusts are dry and dark at the edges but not black. The bread is your thickener and your flavour; pale soft bread drinks broth like a sponge and gives you paste, while dark roasted rye gives the soup its nutty back and releases starch slowly.
If your bread is only one day old, slice it and dry it at 120C for 20 minutes before roasting. Fresh bread carries too much moisture and turns gummy in the pot. - 2
Sweat the onion
Warm 1 tablespoon of the oil or butter in a heavy pot over medium-low heat. Cook the onion with a pinch of salt for 8 to 10 minutes, until soft and golden at the edges, because raw onion in broth tastes thin and sharp. Stir in the garlic and caraway for 30 seconds; fat wakes the caraway before the broth dilutes it.
- 3
Simmer the bread
Tip in the roasted bread and stir until it is coated in the onion fat, then add the hot broth and bay leaf. Bring it to a gentle bubble, then runter mit der Temperatur, down with the temperature, and simmer uncovered for 20 to 25 minutes. A hard boil beats the bread into glue; a low simmer lets the crusts fall slowly and thicken the soup cleanly.
- 4
Work the texture
Remove the bay leaf. Beat the soup with a wooden spoon or whisk until it is rough and creamy, leaving a few soft bread flecks because this is Brotsuppe, not baby food. If it stands in ridges, add a splash more broth; stale bread varies, and the pot tells you.
- 5
Season and finish
Stir in the marjoram, nutmeg, vinegar, black pepper, and only then the salt, because broth and rye both bring their own salt and sourness. Brown the optional butter in a small pan until hazelnut-coloured, then spoon it over the bowls with the chives. Würzen, Fett, Salz zum Schluss: the bright and fatty things go last so they stay clear.
Chef Tips
- •Use stale sour rye or mixed rye Bauernbrot. A soft white sandwich loaf has no crust, no sour note, and too much cotton in it; it thickens, yes, but it tastes like wet nothing.
- •For Lent, use vegetable broth and oil. For an ordinary weeknight, use broth from bones, rind, and roasted vegetable trim. Weggeworfen wird nichts, and the soup knows the difference.
- •Stale means dry, not moldy. If there is mold, throw it away; that is not wastefulness, that is eyesight.
- •Stop before puree. Brotsuppe should pour thickly and show soft bread flecks; if you make it smooth, you've made a different thing and lost the point.
- •Vinegar goes at the end. Boil it hard and the brightness leaves; add it after the bread has fallen, and the rye wakes up.
Advance Preparation
- •Tear and dry the bread up to 1 week ahead, then keep it in a paper bag once it is fully dry. Plastic traps damp, and damp old bread is how you get mold.
- •The soup can be cooked 1 day ahead, but it thickens as it sits. Reheat it gently with a splash of broth, then add the vinegar, chives, and browned butter after reheating.
Frequently Asked Questions
Nutrition Information
1 serving (about 390g)
Calories
280 calories
Total Fat
12 g
Saturated Fat
3 g
Trans Fat
0 g
Unsaturated Fat
9 g
Cholesterol
8 mg
Sodium
920 mg
Total Carbohydrates
37 g
Dietary Fiber
5 g
Sugars
4 g
Protein
7 g
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