445,000 Scovilles. One of the hottest versions of the habanero is the Caribbean Red. With the typical citrusy-smoky flavor of orange habaneros and twice the heat, these fireballs are a perfect addition to a pot of soup or chili, and they make killer hot sauce. Like its sister, the Caribbean Red probably originated in the Yucatan Peninsula of Mexico, but it is now commonly grown in the Caribbean and North America as well. It even grows nicely in northern climates, either in summer gardens or in large pots. The chiles mature from green to bright red, and grow to about 1 ½” in length and 1” in width.