Pre-heat the oven to 160C.
Grease your bundt tin very well using butter.
Pour 250ml of boiling water over the 6 tea bags and allow to brew.
Meanwhile, beat the butter and caster sugar until very light and fluffy.
Beat in the eggs, one at a time until well combined.
In another bowl, mix the flour, baking powder and spices.
Add the flour mix to the wet mix and fold in.
Remove the teabags from the infusion.
Add the apple sauce and 100ml of the tea infusion to the mixture and stir in well until well combined.
Spoon into the bundt tin and bake in the oven for 60 - 70 minutes or until a skewer comes out clean.
Allow to cool in the tin for 15 minutes and then turn out.
Make the icing by mixing the icing sugar with just enough of the remaining tea infusion to create a thick paste.
When the cake is totally cold, pour it over the bundt cake.