Do Mangrove Jack's kits contain dairy or soy? Sam February 18, 2021 13:17 Updated Yes - Bourbon Barrel Strong Ale. Currently, the only beer or cider kit that contains either dairy or soy is the Bourbon Barrel Strong Ale which contains milk allergen and is stated on the packaging. Related articles Is the Hard Seltzer Kit gluten free? Are your beer and cider kits vegan? When do I add the beer finings? Is it better to use priming sugar or carbonation drops? How much should I use? What's unique about Kveik Yeast?