National French Dip Day is observed every November 12 to celebrate the French dip sandwich, a hot sandwich consisting of thinly sliced roast beef on a baguette, served au jus with a dipping bowl of beef broth or gravy. This unofficial food holiday was founded in 2018 by Cole’s to mark the restaurant's 100th anniversary. The French dip sandwich originated in Los Angeles in the early 20th century, with both Cole’s and Philippe’s claiming to be its inventor. While Cole’s serves the sandwich with a side of beef jus, Philippe’s dips the baguette in hot beef broth before assembly. Celebrants typically enjoy French dip sandwiches with friends and are encouraged to share photos on social media using the hashtag #NationalFrenchDipDay. The holiday highlights the sandwich's popularity across many restaurants and diners in the United States.