– When shopping for pepperoni, it is worth spending a little more money on deli- sliced pepperoni due to the fact that it contains less sodium than pre-packaged pepperoni.  Plus the taste of pre- packaged pepperoni does not compare. Another option to try is thinly sliced soy-based pepperoni. For a longer shelf life for fresh pepperoni, store it in an air-tight container in the freezer. Thaw when ready to use again.