Pre-heat the oven to 175℃ (350℉). Melt the butter and brush over a bundt tin. Mine was just over a litre (35 fluid ounces) in capacity.
Mix all of the dry ingredients together in a large bowl.
In a separate bowl, whisk the egg and then add the other wet ingredients.
Pour the wet ingredients into the dry and stir just until everything is combined (do not over work).
Pour into the prepared pan and bake for around 40 minutes (you may need to cover the cake with some foil for the last ten minutes or so). The cake is ready when an inserted skewer comes out clean.
Leave in the pan for around ten minutes, then turn out onto a wire rack. Leave until cooled.