Gazpacho Sandwich

Ingredients

• 1/2 cup crumbled feta cheese
• 3 tablespoons good quality extra-virgin olive oil
• 2 tablespoons sherry vinegar
• 2 teaspoons Dijon mustard
• 1/8 teaspoon freshly ground black pepper
• 1/8 teaspoon kosher salt
• 1 shallot, chopped
• 1 round loaf sourdough bread, cut into 1/3-inch-thick slices
• 3 to 4 ripe tomatoes, thinly sliced
• 1/4 teaspoon kosher salt
• 1 medium cucumber or 1/2 English cucumber, peeled and sliced into thin rounds
• 1 yellow pepper, sliced into thin strips
• 2 cups arugula
• 1/4 cup roughly chopped fresh basil
• 1/4 cup roughly chopped fresh cilantro
• 1/4 teaspoon freshly ground black pepper