Tuna Provencal

Ingredients

• 1 can drained white chunk tuna
• 1 tablespoon capers
• 12 cured black olives, pitted and sliced
• 1/2 red onion, finely chopped
• 2 plum tomatoes, seeded and chopped
• 1 tablespoon olive oil
• 2 tablespoons red wine vinegar
• Salt and pepper
• 1 bunch of watercress, rinsed and dried
• 6 slices whole grain bread