Preheat oven to 160°C fan forced, and place rack in middle of oven
Line a large loaf tin (25cm x 9.5cm) or a 22cm (base measurement) round spring form tin with baking paper
In a large bowl sift together the flour, bicarb soda, allspice, cinnamon and nutmeg
Put aside
In another bowl mix together the brown sugar, molasses, golden syrup and ginger
Add melted butter to wet mix ensuring it is completely absorbed
Add eggs and mix again ensuring they are completely absorbed
Stir in the sour cream, vanilla and orange rind
Finally, gently fold the dry mix into the wet mix … do not overbeat, but ensure that all the dry mix has been incorporated
Put mixture into chosen tin and bake for 60 minutes, turn tin around and continue for another 10 to 15 minutes or until skewer inserted in the centre comes out clean (it takes exactly 1 hour 15 minutes in my oven for the round tin, and 1 hour 10 minutes for the loaf tin)
Remove cake from oven and rest for 10 minutes before removing to a cake rack to cool completely
Keeps well for a few days … does not need to be refrigerated.