Cook Easy Czech Soup with Sour Cream Delight

Ingredients

• 2 tablespoons unsalted butter
• 1 medium onion, diced
• 3 large potatoes, peeled and cubed
• 4 cups vegetable broth
• 1 teaspoon dried marjoram
• 1 teaspoon salt
• ½ teaspoon black pepper
• 1 cup heavy cream
• 2 tablespoons fresh dill, chopped
• 1 cup sour cream
• 1 tablespoon lemon juice
• Salt and pepper to taste