In a large bowl, sift the flour, ginger, cinnamon, baking soda and salt, if using. Set aside.
Preheat the oven to 180 C and grease a 9x5 loaf tin.
In a mixing bowl, combine the butter, eggs, sugar and molasses. Mix well, then add the orange juice and hot water. Mix again.
Fold in the flour mixture gradually, removing any lumps as you go. Run a hand mixer through the batter if needed to remove any stubborn lumps.
Pour the batter into the prepared tin and bake for 45 to 50 minutes, until a toothpick poked in the center comes out clean. Cover the tin loosely with foil if the top is darkening too fast.
Let the cake cool while you prep the apples.
Peel, core and slice the apples and toss them in the orange juice.
In a non-stick pan, place the apple slices (keep the juices aside) in a single layer and cook them on both sides until lightly golden. Do this is in batches if you need to, but make sure the apple slices are not crowded together.
Remove the apples from the pan, then melt the butter in the same pan.
Add the sugar and vanilla pod and stir, then add the apples back in, stirring well to coat them in the butter and sugar. Cook till the apples soften but don't let them get mushy.
Finally, pour in the whiskey and any remaining juices from the apples. Cook for 2 to 3 more minutes until the liquid thickens and bubbles slightly.
Turn off the heat, and serve the apples warm with large slices of the cake. Enjoy!