Zucchini Keftedes With Feta And Dill

Name: Zucchini Keftedes With Feta And Dill
Ingredients: 1 1/3 pounds medium zucchini, trimmed; 1 teaspoon coarse kosher salt; 1/2 cup thinly sliced green onions; 3 tablespoons chopped fresh dill; 3 tablespoons chopped fresh mint; 2 garlic cloves, minced; 1 teaspoon finely grated lemon peel; 1 cup panko (Japanese breadcrumbs); 1 large egg, beaten to blend; 1 cup coarsely crumbled feta cheese; Canola oil (for frying); Plain whole-milk or reduced-fat Greek-style yogurt (for garnish); Additional chopped fresh dill (for garnish)