Don said "I did a post about making jerky - dried meat. Someone asked if adding something sweet, like honey, might make the jerky less tough. The reasoning was because the sugar content makes a cake "softer". I don't know about the cake but do you think the sweetener would make the jerky less tough? (Not that I care, we don't like sweet jerky and go through this stuff as fast as I make it.)"
In theory honey or corn syrup would keep the jerky more supple but I would find the sweetness off-putting. Glycerine (Glycerol) may also work and is not so sweet.
Probably the best solution is to not dry it as much.
I occasionally make my own jerky. I use a variant of a recipe I found on line called Cliff's Fantastic Jerky. I vary it by using crushed garlic and chopped onion rather than the powders.
Far too nice to make too often.