Mediterranean Tuna Sandwich

• 1/4 cup olive oil 
• 1/2 cup red wine vinegar
• 1 red onion, sliced very thinly
• 1 can tuna 
• capers 
• sliced kalamata oilves, to taste
• 1 fresh tomato, sliced 1/4-inch thick (or several cherry tomatoes)
• leafy greens (romaine hearts or spinach work well)
• fresh bread (I use italian, cut on the slant)

Directions

1. Using a small bowl, mix olive oil and red wine vinegar together.

2. Place onions in mixture and let marinate while you prepare the rest of the ingredients.

3. When ready, set out bottom slice of bread, drizzle thinly with the oil-vinegar mixture, and layer onions.

4. Follow with capers and olives, tuna, tomato, leaf green, drizzled lightly with oil-vinegar mixture and top slice of bread.

5. Squish everything together and let sit for a few minutes while you clean up, bring plenty of napkins, this is one messy sandwich