To put the magic back into your souvenir popcorn bucket (back on topic) I recommend Popping the pop secret jumbo popcorn in a whirly-pop using grapeseed oil or a 75:25 blend of canola and refined coconut oil. Finish the popcorn with flavor-col. If flava-col isn’t available… get it. In the mean time, pickling salt will get you the right texture.
For microwaving, pop-secret doesn’t have an option without that gross butter flavor oily mess. Instead use Orville Redenbacher Simply Salted and finish with a light dusting of flava-col.