Zucchini Fritters with Tzatziki

Name: Zucchini Fritters with Tzatziki
Ingredients: 3 pounds medium zucchini (about 6), washed and stemmed; 1 teaspoon sea salt, divided; 1/2 cup plus 1 tablespoon all-purpose flour; 2 large eggs; 1/4 cup finely chopped fresh mint; 1/2 teaspoon freshly ground black pepper; 6 to 8 ounces brine-packed Greek feta (about 11/2 cups), crumbled small; 1/2 cup olive oil for frying; For the tzatziki:; 1/4 seedless cucumber; 6 ounces plain yogurt; 2 cloves garlic, peeled and mashed into a paste; 1 tablespoon olive oil; 2 teaspoons freshly chopped dill; 1/2 lemon, juiced; sea salt, to taste