Ingredients

• 1 cup plain Greek yogurt
• 1 cup light sour cream
• ½ lemon, juiced
• 2 tablespoons chopped fresh dill, or to taste
• 2 tablespoons capers, chopped
• 1 shallot, minced
• ½ teaspoon white vinegar, or to taste
• salt and black pepper to taste
• 2 large cucumbers, peeled and sliced
• 2 tomatoes, sliced
• 1 (3 ounce) package smoked salmon, flaked