Is Catchup Pronounced?

First recipe for ketchup appeared in a cookbook in 1758 by Eliza Smith called The Complete Housewife. You boil two quarts of strong stale beer and a half pound of anchovies. This is from a time period where condiments like this were used to cover meat that had gone rogue because we didn't have modern refrigeration techniques. But it makes sense that they would have been pungent over everything else as they're trying to give you a big bowl to ignore the gross, rotten meat.