15-minute Cold Beet Soup

Ingredients

• 4 cups (1 L) kefir
• 1 long cucumber
• 4 hard-boiled eggs
• 17 1/2 oz (500 g) pickled beets
• 1/2 tsp horse-radish
• 1/2 tsp mustard ((rather spicy one))
• 3 radishes
• kosher salt to taste ((regular salt can also be used))
• a small punch of dill