I sent out a reminder last week that since January 15 has passed, even items that contain malt for which dating codes are not known should no longer be purchased without verifying that the malt they contain is Yoshon. (Note that the safe purchase date of Jan 15 did not apply to beer. That date for beer was Nov 15.)
Pretzels almost always contain malt for flavoring and coloring. That means that most pretzels may be Chodosh by now. However the malt in LIEBERS pretzels is always Yoshon, making these pretzels Yoshon. The mashgiach, Rav Weissmandl has determined that this uses malt that is Yoshon, made from dextrose or corn, as opposed to the usual malt made from barley.