Ok, someone mentioned Mac-n-Cheese. Which led me to a mornay sauce. Which requires a bechamel. Leading to roux. Dropping me on the doorstep of clarified butter. I haven't ever used or made it. Is there a reasonable way to make it? Can I make a huge batch and keep it forever? Will I every be accepted into the domain of foodie with just butter? Should I even bother for a mac-n-cheese?