Pour lentils into boiling water, cook over low heat with the lid closed for 25 minutes, add salt at the end of cooking.
Prepare the dressing: mix balsamic vinegar, olive oil, lemon juice, ginger (if fresh – grate) and ground black pepper.
Wash and dry the arugula.
Cut the cherries and olives in half.
Cut the feta into small cubes.
Gently mix the lentils with feta cheese, tomatoes and olives. Put the arugula on a platter, put the salad on top and pour the dressing.