Beat egg whites to stiff peaks and set aside. Cream butter and sugar, then add in juice, flour and baking powder and once combined coconut. Mix about a third of the eggwhite in without being too brutal but thinning the mix a bit so that it is easier to very gently fold through the remaining whites. Spread in a slice tin, sprinkle with almonds and bake at 180 deg cel until lightly browned and cooked through. While that is in the oven, chuck all the syrup stuff in a saucepan and boil until it JUST begins to thicken, stirring so it doesn't burn. Pour over warm slice. Taaaaadaaaa!