zucchini (about 500 grams) • small green onions • fresh mint • fresh parsley • plain dry breadcrumbs (about 75 grams; I used rustic bread and ground it in a food processor) • mild graviera cheese, shredded (about 50 grams; or substitute with mild Swiss or Gruyère) • feta cheese, crumbled (about 50 grams) • large egg • Slightly less than 1/4 cup olive oil (about 3 tablespoons or 40 ml) • Salt and freshly ground black pepper • All-purpose flour for dredging • Vegetable oil for frying