In a large bowl, combine eggs, sugar, and yogurt and whisk until smooth. Drizzle in oil and continue whisking. Add lemon zest, extract and juice and continue to whisk. Add flour, baking powder, and salt. Whisk for about one minute until fully combined. Do not overmix. Pour the batter into your loaf pan and smooth the top. Bake for 50 minutes or until a toothpick inserted in the center comes out clean. Allow the loaf to cool in the loaf pan for about an hour. Then remove loaf from the pan and allow it to cool on a wire rack for another hour or 2 until completely cooled.