How I Built This with Guy Raz

Clif Bar: Gary Erickson

We're taking a break for the holidays, so we bring you this favorite from the last year: Clif Bar. Gary Erickson asked his mom, "Can you make a cookie without butter, sugar or oil?" The result was an energy bar named after his dad — now one of the most popular energy bars in the U.S. PLUS for our postscript "How You Built That", we check back with Alec…