Tempura Shrimp and Vegetables

Name: Tempura Shrimp and Vegetables
Ingredients: 1/4 cup dashi; 1/2 cup light soy sauce; 2 teaspoons fresh ginger, finely grated (from about 3/4-inch piece); 1/2 cup daikon radish, finely grated (from about 4 1/2-inch piece); 1/4 cup mirin (Japanese sweet rice wine); 10 green beans, trimmed; 12 large shrimp, peeled, deveined, tail shells left intact; Salt and pepper; About 6 cups vegetable or peanut oil for frying; 2 cups all-purpose flour; 1 1/2 tablespoons baking powder; 2 tablespoons Asian sesame oil; 10 fresh shiitake mushrooms (about 3/4 pound), stemmed; 1 large white onion, peeled and cut into 1/2-inch thick rings; 2-ounce piece fresh lotus root (about 1 1/2 inches long), peeled, and cut into 1/4-inch-thick slices; 10 fresh shiso leaves