
Chef Klaus
Backfisch mit Kartoffelsalat
Backfisch works when the batter is cold, the fish is dry, and the oil is steady. Miss one of those and you get a wet coat, not a crisp one.
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A northern eel stew built on roots, potatoes, herbs, and vinegar, with the fish added late so the broth stays clear and the flesh stays whole.
Aaleintopf belongs to the north, to river mouths, canals, and coastal kitchens where eel once came home in the net and the pot had to feed the table. This is not a thin soup. It is an Eintopf, one pot with potatoes, roots, herbs, and fish enough to make a meal, sharpened with vinegar because the northern palate knows sweet and sour better than people give it credit for.
Hamburg will argue from its Aalsuppe, with dried fruit and herbs and sometimes eel, sometimes a joke about allens, everything, going into the pot. Schleswig-Holstein keeps it plainer, more eel and vegetable, less fruit. I cook this one as a north German stew: clean broth, potatoes that hold their corners, a little prune for depth, vinegar at the end. Im Norden anders, im Süden anders. The south has its dumplings and roasts; the north has fish, rye, sourness, and sense.
The technique that decides it is simple: don't boil the eel. Build the broth first from vegetables, peelings, herbs, and the eel bones if you have them, then put the eel pieces in late and let them tremble below a hard boil. A rolling boil tears the flesh and drives the fat into the liquid, and then you have a cloudy pot that tastes tired before it reaches the table.
Taste at the end, not at the beginning. Vinegar, sugar, salt, and a knob of butter go in when the potatoes are tender and the fish is done, because the sharpness cooks dull if you spend it too early. Weggeworfen wird nichts: the parsley stems, leek greens, peelings, and bones make the broth. Nicht aus dem Glas.
Eel was a practical fish in northern Germany for centuries because it moved through the Elbe, Weser, Eider, canals, and Baltic inlets, and smoking, salting, and sour cooking helped carry fish through a short keeping life before refrigeration. Hamburg's famous Aalsuppe appears in nineteenth-century civic cookery as a sweet-sour herb soup tied to the old Low German idea of allens, everything, which explains why some versions contain eel and some are more about the full larder than the fish itself. Modern cooks should buy eel carefully: European eel stocks declined sharply in the late twentieth century, so traceable farmed or responsibly sourced eel matters more here than nostalgia.
Quantity
800g
cut into 5cm pieces, bones kept if available
Quantity
1.2 litres
Quantity
500g
peeled and cut into 3cm chunks
Quantity
2
diced large
Quantity
1
white part sliced, green part kept for broth
Quantity
150g
diced
Quantity
1 small
diced
Quantity
1
halved
Quantity
2
Quantity
6
Quantity
4
Quantity
1 small bunch
stems and leaves separated
Quantity
1 small bunch
chopped
Quantity
2
chopped
Quantity
2 tablespoons, plus more to taste
Quantity
1 teaspoon, plus more to taste
Quantity
30g
Quantity
to taste
| Ingredient | Quantity |
|---|---|
| cleaned eelcut into 5cm pieces, bones kept if available | 800g |
| cold water | 1.2 litres |
| waxy potatoespeeled and cut into 3cm chunks | 500g |
| carrotsdiced large | 2 |
| small leekwhite part sliced, green part kept for broth | 1 |
| celeriacdiced | 150g |
| parsley root or parsnipdiced | 1 small |
| onionhalved | 1 |
| bay leaves | 2 |
| black peppercorns | 6 |
| allspice berries | 4 |
| flat-leaf parsleystems and leaves separated | 1 small bunch |
| dillchopped | 1 small bunch |
| dried pruneschopped | 2 |
| white wine vinegar | 2 tablespoons, plus more to taste |
| sugar | 1 teaspoon, plus more to taste |
| butter | 30g |
| salt and black pepper | to taste |
Keep the eel cold, rinse the pieces briefly, and pat them dry. If the fishmonger gives you the head and bones, keep them for the broth; they give body without needing a bought stock. Raw eel blood is not for tasting, so wash the board and knife after handling and cook the fish through until the flesh turns opaque and lifts cleanly from the bone.
Put the water, onion, leek greens, parsley stems, bay, peppercorns, allspice, and eel bones if you have them into a wide pot. Bring it slowly to a bare simmer and cook 25 minutes, skimming once or twice, because a calm broth stays clean while a hard boil drags bitterness and cloudiness out of the scraps. Strain it and salt it lightly.
Return the strained broth to the pot and add the potatoes, carrots, celeriac, parsley root, leek whites, and chopped prunes. Simmer 20 to 25 minutes, not harder, until the potatoes are just tender at the point of a knife; waxy potatoes hold their corners in an Eintopf, while floury ones break down and make the broth muddy.
Lower the eel pieces into the pot and keep the liquid at a tremble, 8 to 12 minutes depending on thickness. Runter mit der Temperatur. Eel is fatty and fine-grained, and a boil tears it apart and sends the fat into the broth instead of keeping the pieces clean.
Stir in the vinegar, sugar, butter, chopped parsley leaves, and dill, then taste for salt and black pepper. Würzen, Fett, Salz zum Schluss: vinegar goes in late because long boiling dulls it, butter goes in late because it rounds the sour edge, and the herbs go in late because grey dill is nobody's achievement.
Let the stew stand off the heat for 10 minutes so the eel firms and the sweet-sour broth settles around the potatoes. Serve in deep bowls with dark rye on the side and warn people about the bones if your eel was cut on the bone. Schön ist, was schmeckt.
1 serving (about 670g)
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