Combine the oats, flour, sugar and coconut in a bowl. Combine the butter and golden syrup in a small saucepan, stir over low heat until the butter is melted, remove from heat. Combine the carb soda and water, stir well, then add to the butter mixture - it will probably foam up. Stir the wet ingredients into the dry ingredients until combined and all the dry ingredients are moist.

Place spoonfuls of the mixture (about ½ a dessertspoon) on a greased oven tray about 4 cms apart (they spread during cooking), lightly pressing each spoonful of mixture together as you place it on the tray. Bake in a slow oven (about 300°) for 15-20 minutes or until golden - don't overcook if you like them a bit soft and chewy as I do.

Cool for about a minute, then loosen and transfer the biscuits to a wire rack while still a bit warm, to cool completely.