What’s in bottled ketchup?  Tomato concentrate, vinegar, onions, garlic, corn syrup, mustard, salt, cumin, allspice and cinnamon.  It has a flavor that starts on the tip of your tongue with salt, moves to the side with sour notes and then hits the back of your tongue with a punch of umami.  Deceptively complex, it is a condiment that cannot be replicated at home.  Make a tomato sauce if you want to, but don’t call it ketchup unless you have the secret recipe from Heinz.