Start off on YouTube and search https://jacquespepin.com/. Look up his simple onion sandwich, the favorite of his wife.
Make it and take a bite. Have a glass of Chardonnay or Guwertztraminer around to wash it down.
https://www.bing.com/videos/riverview/relatedvideo?q=jacques+pepin+onion+sandwich&mid=61579E6188DEFAD3F38161579E6188DEFAD3F381&FORM=VIRE