Sorry, missed the kale question but Thingolfin's answer is pretty good. It's tougher or denser maybe I dunno a great way to describe it either and the taste is like some other greens but off slightly. Dunno if you eat a lot of other greens like collard or turnip but I'd say it's probably closer to mustard greens. It's also usually prepared differently and not cooked for as long and sometimes even served raw.
Regarding Tabasco, I'm not a huge fan and am more partial to Red Devil or maybe some other Trappey's hot sauce but I've never tried any of those with chorizo so I'll have to give it a go.