Movie theater popcorn may seem impossible to recreate at home, but it turns out there's one secret ingredient that makes the classic cinema snack special.

Flavacol is a popcorn seasoning salt widely used in movie theaters to create that signature buttery, salty flavor. It’s a fine, orange-yellow powder made with salt, artificial butter flavor (diacetyl), and coloring agents, which is what gives movie theater popcorn its vibrant color and rich, savory taste.

Cinemark has its own version of BYOB — Bring Your Own Bucket — on Sunday. For $5, moviegoers can fill up their own container. The only limitation is that the bucket has to be 400 oz. or less.

Harkins, Cinemark and AMC are offering discounts and freebies for National Popcorn Day on Sunday. Here's how to score the deals in Arizona.

Cinemark Theatres is celebrating National Popcorn Day by offering to fill any container full of popcorn for $5.

To help you enjoy popcorn in all its savory, salty, and sweet forms, movie theaters across the U.S. are offering deals. Movie theater deals for National Popcorn Day AMC Theatres.

National Popcorn Day. Having trouble keeping track of all the discounts that just keep popping up? We’ve got you covered with a comprehensive list below. Moviegoers can visit AMC Theatres on Jan. 19 to score unlimited refills on any size popcorn purchase and 50% off the chain’s Loungefly popcorn bag with the purchase of any size popcorn.

National Popcorn Day is Sunday, January 19, and movie theaters like AMC, Cinemark and Regal, as well as food brands are celebrating with discounts and freebies.

National Popcorn Day is here. Take a look at all the deals and choose your favorite! National Popcorn Day! Today, January 19th is National Popcorn Day. Movie theatres and retailers are offering some yummy deals on popcorn that will save you some cash.