Tuna and Hummus Sandwiches

• 14 ounces jarred or canned Italian tuna in olive oil14 ounces jarred or canned Italian tuna in olive oil
• 1/4 cup minced celery
• 2 tablespoons minced yellow onion
• 2 tablespoons minced cornichons
• 2 tablespoons freshly squeezed lemon juice
• 2 tablespoons good mayonnaise
• 1 teaspoon Dijon mustard
• 1/2 teaspoon kosher salt
• 1/4 teaspoon freshly ground black pepper
• Sourdough bread, halved and sliced 1/2 inch thick
• Hummus, store-bought or homemade (recipe follows)
• Fresh radishes, sliced

Hummus:

• 2 cups canned chickpeas, drained, liquid reserved (15.5-ounce can)
• 1/3 cup tahini or sesame paste
• 4 teaspoons minced garlic (4 cloves)
• 6 tablespoons freshly squeezed lemon juice (3 lemons)
• 8 dashes hot sauce, such as Tabasco
• 2 teaspoons kosher salt