I contacted Cabelas via email to ask about ingredients and this was the reply
Hello Keith and thank you for contacting Cabela's.
This is in regards to your Ask and Answer question on the Cabela's Meat and Fish Cures. The ingredients for the different cures are as follows;
The maple cure - salt, maple sugar, sugar, sodium nitrite (.84%) with less then 1% glycerine added to prevent caking.
The fish cure - Salt, Sugar, Maple Sugar, and less Than 2% Propylene Glycol added to prevent caking.
The speed cure - Salt, Sodium Nitrite (6.25%), Red #3, and less then 1% Glycerine added to prevent caking.
The sweeter than sweet cure - Salt, Sugar, (Cane, Brown, and Maple Sugar), Sodium Nitrite (.84%) and less than 2% Propylene Glycol added to prevent caking.
The waterfowl cure - Salt, Sugar, Brown Sugar, Sodium Nitrite (1.5%), Maple Syrup, Carmel Color, Less than 2% Glycerine added to prevent caking.