Suggested by Shaker yazikus: "Condiments! Which is your favorite—is mustard your jam? Mayo or veganaise or Miracle Whip? Mustard with seeds or no seeds? Ketchup on eggs? Basically, I love hearing people's strong feelings about condiments, and everyone seems to have something they are really particular about."
I rarely meet a condiment I don't like: Ketchup, mustard, mayo, guacamole, salsa, sriracha, wasabi, soy sauce, duck sauce, gravy, aioli, chutney, tartar sauce, tzatziki, HP sauce—bring it on!
The only thing I don't love is picked condiments. Relish, Branston pickle, etc.
And I strongly prefer having control over how much of any condiment gets added to what I'm eating. On the side, please!