LISA’S TIP – There’s a couple of parts to this recipe which are optional, you can omit the sultana’s if you’re not a fan. Also, as I mentioned this is my mother’s recipe, I have adapted it by adding the sour cream topping, although again this is totally optional, my mother never adds the sour cream, but I like the contrast in colour, so the choice is yours. Naturally, it will be quicker to make using less ingredients, and if you choose to omit the sultanas and sour cream, and it will be just as delicious! Whatever you choose I hope that you enjoy! You can freeze this cheesecake and thaw before serving.