Terrific Pacific Rim Tuna Burgers with Cucumber Shiitake Shoestring Seared Slaw - Sutter Home Family

Ingredients

• 2 cups water
• 1/2 of an English cucumber cut crosswise
• 2 tablespoons unsalted butter
• 1 cup sliced shiitake mushrooms
• 1/3 cup matchstick cut radishes, cut from large long radishes so they average about 2 inches long
• 2 teaspoons minced peeled ginger
• 1 teaspoon minced garlic
• 2 teaspoons fish sauce
• 3 tablespoons Thai sweet chili sauce
• 2 teaspoons vegetable oil
• 1/3 cup finely chopped green onion
• 1 tablespoon tamari sauce
• 1 tablespoon black sesame seeds
• 1-1/2 teaspoon medium coarse sea salt
• 1/2 teaspoon fresh cracked black pepper
• 2 pounds well chilled Ahi tuna, cut into 1/2 inch cubes
• 6 sesame rolls, split