1 pound (about 2 medium) zucchini
1 teaspoon coarse or Kosher salt, plus extra to taste
2 scallions, split lengthwise and sliced thin
1 large egg, lightly beaten
Freshly ground black pepper
1/2 cup all-purpose flour
1/2 teaspoon baking powder
Olive or another oil of your choice, for frying

To serve (optional)
1 cup sour cream or plain, full-fat yogurt
1 to 2 tablespoon lemon juice
1/4 teaspoon lemon zest
Pinches of salt
1 small minced or crushed clove of garlic