Union Square Cafe's Tuna Club Sandwich

Ingredients

• 2 egg yolk
• 1 12 tbsps lemon juice
• 2 tsps red wine vinegar
• 1 tbsp dijon mustard
• 2 tsps minced garlic (finely)
• 12 tsp kosher salt
• 1 12 cups olive oil
• 34 tsp black pepper (fresh coarse ground)
• 12 cup onions (coarsely chopped)
• 13 cup carrot (coarsely chopped)
• 13 cup celery (sliced)
• 1 bay leaf
• 3 whole black peppercorns
• 1 lb tuna fillet (yellowfin tuna fillet skinless cut into 2 inch pieces)
• 1 tsp fennel seed
• 2 tbsps red bell peppers (diced)
• 2 tbsps yellow bell pepper (diced)
• 14 cup red onion (minced)
• 1 tbsp fresh basil (julienned, leaf)
• 1 tsp mints (finely chopped)
• 34 tsp kosher salt
• black pepper (fresh ground)
• fresh lemon juice
• 12 slices sourdough bread (white or 12 slices whole wheat bread lightly toasted)
• 2 12 cups arugula (trimmed washed and dried)
• 8 slices bacon (thick slab, 14 inch thick cooked until crisp)