September 13, 2019 12:18 am 'Tonight': Secret Ingredient With Jennifer Garner and Jim Jefferies Host Jimmy Fallon, actress Jennifer Garner and comedian Jim Jefferies take turns guessing the unusual secret ingredient hidden in each course of a three-course meal. US & World Videos 5:49 Kelly Clarkson hilariously attempts handmade pasta with chef Evan Funke 1:36 O.J. Simpson's cause of death revealed 2:03 Does Shakira still believe in love following Gerard Piqué split? 2:36 Super dad makes Mario-themed obstacle course for son's birthday 1:59 Ellen DeGeneres jokes about being ‘kicked out of show business'