The actors co-starred on the critically-acclaimed series for five seasons, and have been posting hints about a reunion on social media in recent weeks, which led fans to speculate that the news was related to an upcoming movie adaptation of the show.
On Tuesday (July 09), Cranston revealed exactly what the new venture was about - they are joining forces for a new brand of Mexican liquor mezcal.
"We had the time of our lives while shooting 'Breaking Bad' and truly built a very special bond," Cranston wrote in a post announcing the news. "Knowing that we couldn't share the screen for quite a while - our thoughts turned to a new project."
The 63-year-old also detailed the extensive research the pair undertook in Oaxaca, Mexico to get the beverage just right.
"We searched high and low all over Oaxaca, met incredible people along the way and after a beautiful yet grueling search throughout that majestic landscape we believed we may have found our place," he added. "Our Mezcal. It was on a dirt-road, in a tiny village, hours away from the center of town, we found it and it was perfect. Holy s**t, it was perfect. We looked at each other and just simply nodded. This is it. We named it Dos Hombres - two guys on a quest."
But many fans didn't share Cranston's enthusiasm for the project - and made their feelings known.
"Biggest let down in history," one Instagram user commented on the announcement, while another wrote, "I thought it would at least remotely be related to 'Breaking Bad.' DISAPPOINTED."
"WOWWW no breaking bad movie reveal. Who the f**k cares about this. Hyped up for nothing," grumbled a third person.
Despite the flood of angry responses, a few followers found the news exciting, with one cheering on Cranston's crystal meth-dealing "Breaking Bad" alter ego, Heisenberg.
"From getting people high, to getting people drunk," one fan shared. "You go Heisenberg!"