In a large bowl, whisk together the white wine vinegar, salt, and olive oil.

Gently add the canned pear halves to the dressing, and toss to coat.

In a separate bowl, combine the mixed salad greens, sliced fresh pears, chopped tomato, walnuts, and Gorgonzola cheese.

Pour the pear and vinegar mixture over the salad and toss gently to combine.

Sprinkle with coarsely ground pepper if desired.