Although 420 isnt until Thursday, one cannabis company decided to celebrate early in a truly sweet way.

Zen Cannabis, which operates in California, Massachusetts, Missouri and Oklahoma, has spent the last four months working on a truly dope project: Creating what it believes is the worlds largest cannabis chocolate bar.

The so-called Big Zen bar weighs 420 pounds of course! and measures a whopping 9 feet by 4 feet and is three inches thick.

But whats really sweet is the amount of cannabis in the colossal candy bar: 4.2 million milligrams of THC, much larger than the typical 10-milligram dose.

The asking price? A measly $42,000.

The giant bar was made at the companys offices in Oklahoma City, according to CEO Jeremy Zachary.

We wanted to do something that hasnt been done before, and Oklahomas the only state we could do it because its the only one with no limit on milligrams, he told HuffPost.

Zachary estimates 100 pounds of cannabis flower were used to make the five liters of cannabis oil used in the bar.

We needed a custom mold, and that took a month to make, he said, adding that the company also needed a custom table to hold the finished product and a custom cooling chamber.

It took four pours to get the whole bar right, he added.