Hi, could anyone tell me if i would be okay to use golden caster sugar or golden granulated unrefined cane sugar to make lemon curd? The recipe i have requires unrefined caster sugar, which i unfortunately don't have, if so which one would be best? or should i leave it until i have the one the recipe suggests? I would pop to the supermarket if it wasn't after 5. Thank you in anticipation of any guidance.