How to Make It
Stir together kefir, mayonnaise, chives, parsley, dill, garlic, pepper, and 1/8 teaspoon salt in a small bowl.
Combine lentils, 1 cup shaved fennel, oil, and remaining 1/8 teaspoon salt in a bowl; toss gently. Divide lentil mixture among 4 bowls. Top evenly with cucumber, salmon, remaining 1 cup shaved fennel, and fennel fronds. Drizzle evenly with dressing, and serve immediately.