There is a comical scene in "Chapter 54" (House of Cards, S05E02), roughly 3 minutes into the episode, in which Walter Doyle eats some candies and Seth Grayson expresses surprise. What was that Frank Underwood's associate eating?
Pretty sure that's candy corn, a common Halloween candy in the US (note that the episode indeed takes place during Halloween):
It's candy corn. The joke is that many people don't like candy corn.
"The 9 Most-Hated Halloween Treats," Huffington Post
- CANDY CORN
"6 Reasons Why Candy Corn is the Worst Part of Halloween", Spoon University
"It's not candy, it's not corn, it's earwax formed in the shape of a rotten tooth." Gordon Ramsay as quoted in "Gordon Ramsay Ranks the Absolute Worst Types of Halloween Candy", Eater.com
"Explaining The Logic Behind Candy Corn Hatred", Huffington Post