Chocolate that won't melt at warm temperatures while maintaining its taste and texture is the holy grail of candy.Mars, Inc. has recently filed an international patent for a more heat-resistant chocolate.Chocolate melts around 86°F, but the tests Mars conducted for its patent were at 91°, 95°, and 100°. By comparison, when Hershey's was working on a heat-resistant chocolate, the target was reportedly 90°.Mars also specifies that this chocolate would be combined with innovative packaging to further its heat resistance. .The focus for heat resistant chocolates has been countries where temperatures make storage and shipping problematic.It actually gives you a lot more respect for M&M's good ol' candy shell