This classic Russian cold soup is the ultimate summer refresher, combining crunchy fresh vegetables, tender beef, and hard-boiled eggs in a tangy fermented rye bread drink. The bright, slightly sour flavors balance perfectly with cooling cucumbers and fresh herbs. Serve it ice-cold for a satisfying yet light meal on hot days.
Nutrition Facts
Per serving (estimated)
- 330 kcalCalories
- 15 gFat
- 6 gSaturated Fat
- 28 gCarbs
- 3 gFiber
- 5 gSugar
- 21 gProtein
- 640 mgSodium
- 720 mgPotassium
- 95 mgCalcium
- 3.5 mgIron
- 18 mgVitamin C
- 150 mcgVitamin A
Ingredients
For the Soup Base
- 4 cups (1 liter) chilled homemade or store-bought rye bread drink (kvas)
- 1 cup cold water, optional for thinning
- 1/2 cup sour cream
- 1 tsp Dijon mustard
For the Vegetables and Protein
- 2 medium russet potatoes, boiled, peeled, and diced
- 2 large hard-boiled eggs, chopped
- 8 oz cooked beef sirloin or roast, diced
- 2 medium English cucumbers, diced
- 6 red radishes, thinly sliced
- 4 green onions, finely chopped
- 2 tbsp fresh dill, chopped
For Seasoning and Serving
- 1 tsp kosher salt, plus more to taste
- 1/2 tsp freshly ground black pepper
- 1/3 cup sour cream, for garnish
- Extra fresh dill sprigs, for garnish
Directions
- If not already cooked, simmer the potatoes in salted water until fork-tender (about 15 minutes), then hard-boil the eggs in a separate pot for 10 minutes; cool both completely in the refrigerator.
- Dice the chilled potatoes, peeled eggs, and cooked beef into uniform 1/2-inch cubes and place them in a large mixing bowl.
- Add the diced cucumbers, sliced radishes, chopped green onions, and fresh dill to the bowl and toss gently to combine.
- In a small bowl, whisk the sour cream with the Dijon mustard until smooth, then fold this mixture into the vegetables and beef.
- Season the mixture generously with salt and pepper, stirring carefully so the potatoes and eggs do not break apart.
- Pour the chilled rye bread drink over the mixture and add cold water if a thinner consistency is preferred; stir once more.
- Cover and refrigerate for at least 30 minutes, or up to 2 hours, to allow the flavors to meld and the soup to become thoroughly chilled.
- Taste and adjust seasoning with additional salt, pepper, or a splash of pickle brine if extra tanginess is desired.
- Ladle into chilled bowls and finish each serving with a generous dollop of sour cream and a sprig of fresh dill.
Cook’s Notes
- All components must be thoroughly chilled before combining; lukewarm ingredients will ruin the refreshing character of the soup.
- Substitute the beef with boiled ham, kielbasa, or smoked chicken for an easy variation.
- For a vegetarian version, omit the meat and double the eggs, or add crumbled feta cheese.
- Store-bought rye bread drink can be found at Eastern European markets; homemade versions yield a deeper, more authentic flavor.
- Serve in pre-chilled bowls and keep the soup stored in the coldest part of the fridge until ready to eat.
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