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 (this is not a high rise cake)
Place flour, bicarb soda and spices into TM bowl and sift 10 seconds / speed 4 (if using ground ginger add it in now) … put aside
Place fresh ginger into TM bowl and chop 3 seconds / speed 7 … scrape around bowl
Add sugar, molasses, golden syrup and butter and heat 2 minutes / 60 degrees / speed 2
Add sour cream, vanilla, orange zest and eggs and mix 10 seconds / reverse / speed 3
Return dry mix to bowl and blend 10 seconds / reverse / speed 4, scrape around bowl and repeat 2 seconds / reverse / speed 4
Pour mixture into tin, level top, and bake 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 … do not refrigerate