Ingredients

• 2 slices pumpernickel bread, torn into bite- sized pieces

• 1 tablespoon olive oil

• 1/2 teaspoon freshly ground black pepper, plus more for garnish

• 1/4 cup Greek-style yogurt

• 2 tablespoons lemon juice

• 1 tablespoon cider vinegar

• 2 (4.2-ounce) cans oil-packed smoked mackerel, drained and flaked

• 1 (8-ounce) package cooked beets (such as Melissa's), drained and chopped

• 1 apple, cored and diced

• fresh dill, for garnish

• lemon zest and lemon wedges, for serving