Both nations have for years claimed to have invented the Pavlova, a dessert which sees a meringue base topped with fruit and cream.
However, they can agree that the dessert was named after the Russian ballerina Anna Pavlova, who visited both countries in the 1920s.
The Oxford English Dictionary recently relaunched its online edition, including a claim that the first Pavlova recipe was published in New Zealand in 1927 in the word’s definition.
Dr Helen Leach, a professor at New Zealand’s University of Otago, says further proof can be found in publications from 1928 and 1929.
“I can find at least 21 Pavlova recipes in New Zealand cookbooks by 1940, which was the year the first Australian ones appeared,” she told Daily Telegraph.
Fiona Macpherson, a spokesperson for the Oxford English Dictionary, told BBC News that the publishers would remain “neutral” on the recipe’s origins and focus on the “evidence and what it actually means.”