There is a fairly well known recipe for Triple Cooked Chips. It involves cooking chips three different ways / times.
Is triple cooked correct or should it be called Thrice Cooked Chips as they have been cooked three times?
English Language & Usage Stack Exchange is a question and answer site for linguists, etymologists, and serious English language enthusiasts. It only takes a minute to sign up.Sign up to join this community
If it is a fairly well-known recipe, then the name is a fixed phrase by now — and also, well, a name. So it cannot be wrong by definition. It's a label, and as far as the English language is concerned, it can be anything at all. You might as well wonder if New York should be called Second York instead. Or Little Pear. It should nothing. It just is.
As other people point out, many people consider triple to be a modern 'replacement' for thrice, and in advertising, what matters is your customer's opinions, not grammar nerds on the internet.
That said, thrice is more specific and accurate in this case.
"I had coffee twice/thrice" involves a lot more washing up than having a double coffee or a triple coffee.
So triple cooked chips could simply be cooked for triple the amount of time, at triple the 'normal' temperature, or they could be cooked three separate times.
Thrice cooked chips, however, have to be cooked three separate times. It cannot be one longer/hotter cook.
Using Thrice is more descriptive, and in order to be completely understood, you should use thrice. If you want to sell chips, do some market surveys of your target audience and go with the majority.