Badische Grünkernsuppe

Ingredients

Equipment Needed

• •Heavy 3-litre soup pot
• •Sharp knife
• •Whisk and small bowl for warming the yolk
• •Soup ladle

Instructions

1. 1

   Choose the grain

   Use Grünkernschrot, cracked green spelt, not ordinary spelt and not pearled farro. The grain is harvested unripe and kiln-dried, which is why it tastes smoky and nutty instead of merely wheaty. Pick it over for husks or stones, but do not rinse it; the fine meal clinging to the cracked grain is the starch that thickens the soup.

   If you only find whole Grünkern, pulse it a few times in a grain mill or sturdy food processor until it is cracked. Whole grains need much longer and give a different soup; Grünkern flour thickens fast but loses the small chew that makes this bowl worth making.
2. 2

   Sweat the vegetables

   Melt the butter in a heavy soup pot over medium-low heat, then add the onion, leek, carrot, celeriac, and a small pinch of salt. Cook them 8 to 10 minutes, stirring often, until glossy and soft but not browned. Browning would push the soup toward roast flavours and cover the grain, and the grain is the reason we are here.

3. 3

   Toast the Grünkern

   Stir in the Grünkernschrot and cook for 3 to 4 minutes, moving it through the butter until it smells nutty and the grains look lightly coated. Runter mit der Temperatur if the edges darken. The drying smoke turns bitter when burned, and this soup has no heavy sauce to hide a mistake.

   The sound changes when the grain is ready: it goes from damp stirring to a soft sandy scrape on the bottom of the pot. That is enough. Dark brown is too far.
4. 4

   Add the broth

   If using wine, pour it in now and let it bubble for a minute while you scrape the bottom; the acid lifts the butter and grain from the pot, and the raw wine edge cooks off. Add the stock in three additions, stirring well after the first splash so the starch disperses instead of forming lumps. Drop in the bay leaf.

5. 5

   Simmer until tender

   Bring the soup just to a boil, then lower it to a quiet simmer and cook 22 to 28 minutes, stirring now and then, until the Grünkern is swollen and tender with a small bite. A hard boil breaks the vegetables and muddies the broth; a steady simmer lets the grain give body without turning the pot into porridge.

6. 6

   Finish off heat

   Remove the bay leaf. Whisk the cream, egg yolk, and nutmeg in a small bowl, then pull the pot off the heat and whisk one ladle of hot soup into the cream mixture. This warms the yolk gradually so it thickens instead of scrambling. Stir it back into the pot and keep the soup below a boil from here on. Taste with salt, white pepper, and, if the bowl tastes sleepy, the teaspoon of lemon juice or mild vinegar.

   Use a fresh egg yolk, or pasteurized egg yolk if you are serving someone who needs extra caution. The soup should be hot enough to thicken the yolk but never boiling once the yolk is in.
7. 7

   Ladle and serve

   Rest the soup 5 minutes, because Grünkern keeps drinking liquid after the heat is off and the texture settles in that short pause. If it tightens too much, loosen it with a splash of hot stock. Ladle into warm bowls and finish with parsley or chives. Serve with Bauernbrot, farmer's bread, and put the leftover stock back to work tomorrow. Weggeworfen wird nichts.

Chef Tips

• •Buy Grünkernschrot, not ordinary spelt. Ripe spelt can make a fine soup, but it cannot give the beech-dried, green-grain taste that makes this a Baden dish.
• •Use real stock. Bones, leek tops, celeriac peel, parsley stems: that is where the soup gets its backbone. Nicht aus dem Glas, unless the butcher made the stock and you trust the butcher.
• •Keep the toasting gentle. Grünkern already carries a smoke note from drying; high heat turns that note acrid, and then no amount of cream will save the bowl.
• •The soup thickens as it stands. That is not failure, that is grain doing what grain does. Loosen leftovers with stock or water, then correct the salt at the end.

Advance Preparation

• •Make the stock up to 3 days ahead and keep it chilled, or freeze it in measured portions. A simple vegetable stock from trimmings is enough if the Grünkern is good.
• •Cook the soup through the simmering step up to 1 day ahead, then chill it without the cream and yolk. Reheat gently and finish with the yolk mixture just before serving, because reheated egg finish can split if handled roughly.
• •Once finished with cream and yolk, reheat leftovers only gently and do not boil them. Add stock first, then salt, because the grain will have tightened and concentrated the seasoning overnight.

Frequently Asked Questions

Nutrition Information

1 serving (about 410g)