½ cup / 120mlsmelted coconut oil (measured after melting), use refined coconut oil if you prefer no coconut flavour. Any other neutral tasting liquid oil can be used instead, Extra Virgin Olive Oil also works amazingly well, but you need t love that distinct olive oil flavour
¾ cup / 150gcane sugar or white granulated sugar
¾ cup / 180mlsunsweetened milk of choice
¼ cup / 60mlsfreshly squeezed lemon juice
2medium lemons worth of zest
1 cup / 130 gfresh or frozen blueberries , plus another small handful for decorating the top(fresh will give the best flavour
2 - 4tablespoonsfreshly squeezed lemon juice, the amount needed will vary. Please take note of my directions below
Preheat the oven to 375°F (190 *C), then grease a standard 1lb loaf pan ( 8.5 x 4.5 x 2.75 inches) with some coconut oil, or any other neutral oil you have. Place a long strip of baking parchment along the bottom and up either end to act as handles which will allow you to lift the loaf out easily once it's baked.
To a large bowl, add the flour, cornmeal, baking soda, baking powder and salt. Whisk them together to combine.
In another bowl or jug, add the melted coconut oil, sugar, milk, lemon juice and lemon zest. Whisk or stir them all together really well until thick and gloopy.
Make sure everything is ready to go, oven at temperature, loaf pan ready and at your side, before you continue. Then, pour the wet mixture into the dry mixture. With a spatula or wooden spoon, fold them together. Do not beat it or whisk it really hard as that will affect the texture of the loaf. Be gentle, but work quite quickly. As soon as you can no longer see any dry flour, pour in the blueberries and fold those in too.
Immediately spoon the batter into the loaf pan, smooth out the top, and sprinkle over a few extra blueberries (not essential, it's just for looks!). If you don't intend on glazing the finished loaf, a handful of granulated sugar sprinkled all over the top is nice as it will bake up to give a lovely crunchy top.
Get it into the oven without hanging around (we want to really take advantage of the reaction of the baking soda with the lemon juice for maximum fluffy texture). Bake for 47 - 55 minutes. If you use frozen blueberries it might take a couple of minutes longer. Check it at about 47 minutes, by poking it in the centre with a toothpick. If it comes out clean, except for perhaps a little blueberry juice, then it's done. Or press the centre with your finger. If it bounces back it's done. If it leaves a dent put it back in the oven for a few minutes.
Use the parchment paper handles to gently lift the loaf out of the pan and place on a cooling rack. Remove the paper from the base and leave on the rack until completely cool.
Once the loaf is completely cool, in a small bowl, add the powdered sugar. Gradually add the lemon juice 1 tablespoon at a time, stirring really well between each addition. It will feel like there is not enough liquid, then all of a sudden it will come together into a thick, smooth glaze. You shouldn't need more than 4 tablespoons. The amount needed will vary depending on humidity though.
Once the glaze is completely smooth and drizzle-able, use a spoon to drizzle it all over the top of your loaf. Leave it for at least 10 minutes to set up a bit before cutting.