A Toronto fried chicken joint churns out mozzarella sticks so spicy that diners have to sign a waiver before sinking their teeth in, but are they really worth it?The human species has some sort of sick fixation with pushing ourselves to the absolute limit of how much spice our taste buds can possibly handle, and I'm not too proud to admit that I'm one such person, but as much as I live for firetruck red chilli chicken and tongue-numbing salsa roja, even I have limits.Signing a liability waiver that abdicates responsibility for any spice-related health and safety issues might just be mine, but it's not enough to deter scores of thrill-seeking spice-enthusiasts from trying their luck at Dave's Hot Chicken.The L.A.-founded chain has exploded worldwide since it opened in 2017, renowned for its spectrum of spice options, ranging from mild to Reaper, so named for the spice blend's use of the infamous Carolina Reaper pepper.It's this final boss of flavour, kn...