KNACK

[noun] [U] - a skill or an ability to do something easily and wellAs a politician, she has to have the knack of inspiring confidence in her listeners.Paul always had a knack for (writing) a good story.I have an unfortunate knack for saying the wrong thing at the wrong time.There's a knack to using this corkscrew.Making pastry isn't really difficult - it's just a knack that you can soon pick up.