Shop for ketchup (and other products) as the royals do.
It sounds intimidating, but a Royal Warrant of Appointment is recognition given to artisans and products used by the British Royal Household. When shopping for everything from ketchup (Buckingham Palace buys Heinz) to luxury cars (Jaguar, Aston Martin and Bentley) royal followers can treat themselves to products that the queen stocks in her cupboards.
Following a medieval tradition, the Queen, the Duke of Edinburgh, and the Prince of Wales grant their suppliers an official seal. Look for the words, “With appointment by…” above an ornate seal to see who grants which product. Published each year in the London Gazette, the list of over 800 warrant holders is very precise. The entire queendom knows that even if her majesty is happy to cross St. James Park to buy her pickles at Fortnum & Mason, she buys her tea from Twinings.