Preheat oven to 350 F. Spray 3 ramekins well with non stick spray or grease well with butter. Sprinkle a little sugar on the bottom.
Pass the egg yolks through a fine strainer. Add sugar and whisk for a few minutes. Add coconut and mix to combine. Divide evenly into the 3 ramekins.
Place in a large casserole dish. Add boiling water into the casserole dish until it comes up about 3/4 up the side of the ramekins. (this is easier to do if you add the water after you place the dish in the oven).
Bake for 30 minutes. Remove from oven and leave to cool for about 10 minutes.
Using a small rubber spatula or a knife, run it along the perimeter of the pudding in the ramekin. Invert onto a plate and serve.