How do I prevent my choc. pretzels becoming stale? I had some left over ganache that was admittedly thin from some poached pears and my wife suggested we dip the pretzels in them, set them on wax paper and chill in the fridge. ultimately it worked but the pretzels have a stale taste. My guess would be the chocolate was too thin and moisture got into them so I guess a thicker chocolate covering as a better air barrier?