British seamen imported kechap to England, where they used English spices in it and called it ketchup. That was late in the 1700s. The nutritional value of ketchup is often disputed. But here are some useful facts. A tablespoon contains about 16 calories and no fat.
Most ketchup has sugar in it.
It all depends on how sweet and flavorful the tomatoes are. Most ketchup is made by boiling down newly-harvested tomatoes into tomato paste or concentrate. Then throughout the year, the paste or concentrate is used to make ketchup. Ketchup practically lasts forever - as long as you store it right. Keep unopened bottles on a dark, cool shelf, and keep opened bottles in the refrigerator.