1 tablespoon vegetable oil
2 onions, finely chopped
1 cup plain yogurt
1 teaspoon curry powder
1/2 teaspoon chili powder
2 tablespoons chopped fresh cilantro
1/4 cup chopped fresh cilantro
1 (16 ounce) package frozen phyllo dough, thawed
1/2 cup plain yogurt
3 tablespoons half-and-half cream
1/4 cup water
1 cup all-purpose flour
3 cups oil for frying, or as needed