White Gazpacho Ajo Blanco

Name: White Gazpacho Ajo Blanco
Ingredients: 10 cups 1 1/4-inch cubes peeled English hothouse cucumbers; 4 1/2 cups stemmed green grapes; 3 cups 1-inch cubes crustless sourdough bread; 1 1/3 cups slivered almonds, lightly toasted; 2 1/2 tablespoons minced garlic; 1 1/2 teaspoons fine sea salt plus more for seasoning; 1 1/3 cups plain whole-milk Greek yogurt; 1 /3 cup extra-virgin olive oil; 1 /3 cup Sherry vinegar; 1 /3 cup verjus or 2 Tbsp. Champagne vinegar plus 3 Tbsp. water; 2 1/2 tablespoons almond oil (optional); 1 /2 teaspoon honey; 1 /2 cup 1/4-inch cubes crustless sourdough bread; 1 tablespoon olive oil plus more for garnish; Sea salt; 16 green grapes, halved lengthwise; 16 red grapes, halved lengthwise; 1 /2 cup 1/4-inch cubes unpeeled English hothouse cucumber; 2 tablespoons minced fresh chives; 2 tablespoons slivered almonds, toasted