• 2 seedless cucumbers (European), cut crosswise into 3/4-inch-thick pieces
• 1 pound sushi-quality tuna , diced
• 2 teaspoons chopped green onion
• 1 teaspoon finely chopped shallot
• 2 tablespoons extra-virgin olive oil
• 1 tablespoon soy sauce
• 1/2 teaspoon hot pepper sauce
• 2 ounces caviar , for garnish
• 2 tablespoons thinly sliced fresh chives , for garnish

To make cucumber cups, scoop out center of each cucumber piece with a melon baller, making sure not to pierce bottom of cups.

Combine tuna, green onion, shallot, oil, soy sauce, and pepper sauce in a large bowl.

Spoon 1 heaping teaspoon tuna tartare into each cucumber cup; garnish with caviar and chives.