Add lentils, broth and wine to a sauce pan and bring to a boil. Reduce heat to low, cover with a lid, and simmer until lentils are tender, about 35-40 minutes. Drain and cool, then add salt to taste.
In a large bowl, combine the cooled lentils, arugula, cucumbers, avocado, smoked trout, goat cheese, chives, olive oil, and lemon juice. Mix well, then divide between 4 plates and season with freshly ground black pepper and flaky sea salt. Alternately, you can make individual salads if you won’t be eating all four servings at once. For each salad, you’ll use about ⅔ cup lentils, 1 cup arugula, 1 persian cucumber, ¼ avocado, 1 oz smoked trout, ½ oz goat cheese, 1 Tbsp chives, 1 Tbsp olive oil, and ½ Tbsp lemon juice.