Preheat oven to 375 degrees F. Grease and line a 9 x 5 inch loaf tin with parchment paper.

In a medium bowl, sift together the flour, shredded coconut, lemon zest, baking powder and salt. Set aside.

In the bowl of your electric mixer, mix on high speed the butter for about 30 seconds. Add the sugar and beat for a further 2-3 minutes until pale and fluffy. Add the eggs one at a time, mixing well after each addition.

Add half of the flour mixture and fold in until incorporated. Mix in all the yogurt with the lemon juice and fold in. Fold in remaining flour until just incorporated.

Pour into prepared pan and bake for 35 - 40 minutes or until a toothpick inserted in the center comes out clean. Cool on a wire rack.