Milk & Bicarb mix added by Cake and Cookie recipes on August 21st, 2012 · without comments Jamaica Ginger Cake mix after adding (but before mixing in) the milk and bicarbonate of soda mix to the rest of the mixture.Share: Share on Facebook Share on Twitter Share on Google+ Share on LinkedIn™ Share on Pinterest Jamaica Ginger Cake Recipe Leave a Reply Click here to cancel reply. Name (required) Mail (will not be published) (required) Website