Line a 2lb loaf tin with greaseproof paper or a paper loaf liner.
Preheat the oven to about 320F/160C Fan/Gas Mark 3.
Add treacle, golden syrup, dark brown sugar and butter into a saucepan with 70ml of water. Gently heat and stir until completely melted. Do not boil/.
Add flour, Xanthan gum and spices into a mixing bowl and then add your warm mixture to it.
Beat together until smooth.
Add your egg and mix until combined.
In a small dish, add 2 tbsp of water to the bicarbonate of soda, mix until well combined and then mix it into your main mixture. Your final mixture should now look a little lighter in colour and be nice and smooth.
Pour your mixture into the loaf tin and bake for 50 - 60 minutes.
Once baked allow to cool.
The cake should be almost firm to touch, but will firm up more as it cools.
This cake will need a few hours to become sticky and have a perfect texture just like Mc Vities.
Recipe by at https://laurasglutenfreekitchen.com/2019/05/gluten-free-jamaica-ginger-cake/