What is 'fancy ketchup' and is it actually better than regular ketchup?
Food science: I left a completely sealed packet of McDonald's ketchup untouched at room temperature for a year. Why is it now inflated and seems full? - Quora
Mighty McMuffin - Tomato Ketchup
Why Isn't McDonald's Ketchup 'Fancy' Anymore?
Ketchup | McDonald's® Schweiz
Tomato Ketchup - McDonald's - 10 ml
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Tomato Ketchup - Mcdonald's
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McDonald's Employee Reveals Why Their Ketchup Tastes Different Than Heinz - SHEfinds