Preheat the oven to 350F and line a 9x5 loaf pan with parchment paper and set aside.
In a large bowl, rub the sugar and the lemon zest together using your fingers to allow the citrus oils to come through in the sugar.
1 cup sugar
In a mixing bowl cream the eggs, the sugar and zest mixture , and sour cream together until light and fluffy.
3 eggs, 3/4 cup sour cream, 1 zest of two lemons
Add in the oil and mix slowly. Add in the lemon extract, and beat to combine.
1/2 cup oil, 3 tbsp lemon juice, 1 tbsp lemon extract, 1/2 tsp vanilla extract
Add in the flour, baking powder, baking soda, and salt and mix just until combined. Do not overmix.
1 & 3/4 cup flour, 1 & 1/2 tsp baking powder, 1/4 tsp baking soda, 1/4 tsp salt
Pour the batter into the prepared loaf pan and bake for 45-50 minutes or until a toothpick inserted in the center comes out clean.
Allow the loaf pan to cool down completely before removing from the loaf pan and top it with the lemon glaze.