"In New Zealand we haven't pre-made burgers for more than a decade. We do cook items like the fish, beef and chicken patties and hold them for a short period of time, to enable orders to be filled quickly."
They said restaurants run individual "production level systems" so they're cooking "less items, more often."
Each restaurant adjusts their stock levels based on customer demand insights in order to maintain food quality, they told the Herald.
Another Reddit commentor added that they worked at a McDonald's three years ago and that the Filet is "not fresh by any stretch of the imagination".
However, one fan of the fast food chain said that they're not actually troubled by the fact that their "go-to comfort food" isn't fresh.
"I feel like that is the social contract I make with McDonald's whenever I order the Filet," they wrote.
"If you are going to serve me a square piece of fish that tastes the exact same in Denver or the south of France I am under no assumption that it is by any means fresh.
Previously fast food workers have taken to Reddit to warn against order Subway's "oven roasted chicken", which one claimed was actually 'boiled in a microwave.'
"All Starbucks food is reheated frozen food,' another said. 'Ridiculous how little people realize that. Doesn't mean it doesn't taste good, it's just not fresh at all and incredibly overpriced."
One convenience store worker wrote: "I'm gonna say any of the taquitos or hotdogs around midnight, up through about 4 or 5AM. around midnight you can be almost assured that these are now high-mileage."