Okroshka

Ingredients

• 1 cucumber, peeled and diced
  
• 2-3 hard-boiled eggs, diced
  
• 400 grams / 14 oz. / 1¼ cup sour yogurt (or Greek yogurt + the juice of half a lemon)
  
• 200 grams / 7 oz. cooked shrimp or crab meat, chopped
  
• 1 bunch fresh dill or fennel leaves, chopped