First, wash and thoroughly dry the spinach, lemon, and blueberries. Quarter the avocado and lemon and cut them into thin slices. In a large bowl, add the spinach, sprinkle with blueberries, and arrange the avocado and lemon slices here and there. Finish with roughly chopped walnut kernels. See the seasoning and drizzle with extra virgin olive oil. Your salad is ready to enjoy! It pairs perfectly with smoked salmon, grilled chicken breast, and even a hard-boiled egg!