How to get mustard out of clothes is a question I used to think had an obvious answer. Blot it, rinse it, maybe add some vinegar. Done. Then I actually tested it, deliberately, on real fabric, with real mustard, and discovered that
Learning how to get ketchup out of clothes is one of those skills you pick up the hard way, usually at a summer barbecue, usually on something you care about, always at the worst possible moment. Mine was