It's a battle of red and yellow! A condiment thunderdome! A sauce showdown!
...you get the picture. It's time for ketchup and mustard.
Research Links:
Sources:
History — The Surprisingly Ancient History of Ketchup
Mental Floss — From Inedible to Indispensable: When a Quack Doctor Touted Tomatoes as a Medical Cure-All
Let’s Talk Science — Why Is Ketchup So Hard to Pour?
Sources:
Alimentarium — Mustard As a Condiment
A Measured Life — Hello Again! Plus The Science of Mustard
Mental Floss (YouTube) — Food History: Ketchup and Mustard
