Variations: Pear and ginger tarte tatin: Use 4 to 5 pears of medium ripeness, instead of the apples and add 1 teaspoon of grated fresh ginger root in with the butter. Add 1 teaspoon of ground cinnamon to the pastry. You can also make this with puff or sweet shortcrust pastry. If you wish, use golden caster or granulated sugar, but it is a little trickier to see when it is caramelized, so keep watching the pan. The mixture will go a shade darker than the original golden color and should take about 5 minutes in total over a medium-high heat. If it burns, I would suggest cutting your losses and starting again!