Worcestershire Sauce. The issue was discovered by FSIS inspection personnel.
Worcestershire sauce contains many different ingredients and those ingredients can differ depending upon the manufacturer. Normally, it contains anchovies, which is a fish allergen, but not always soy. In this case, the soy was listed in as part of the flavorings. The Lea & Perrins brand from Heinz, which is considered the authentic Worcestershire Sauce, does not list soy as a component.
USDA Recall Notice
http://www.fsis.usda.gov/wps/wcm/connect/FSIS-Content/internet/main/topics/recalls-and-public-health-alerts/recall-case-archive/archive/2016/recall-108-2016-release
Morty Pride Meats, Inc. Recalls Pork Barbeque Products Due To Misbranding and Undeclared Allergens
Class II Recall 108-2016
Health Risk: Low Nov 17, 2016