Gubinge is a bush plum; there's a lot of hype around stuff coming out of the Amazon, Acai and so on, but Gubinge is a really powerful indigenous Australian superfood. It's the highest natural source of Vitamin C on the planet, and that's been verified. The species is called Terminalia Ferdinandiana, more popularly known as the Kakadu plum, and it grows in the Kakadu and the Kimberleys. The Kimberley version however has tested higher than the Kakadu version for Vitamin C.
The Gubinge Powder that we produce and market under the Nyul Nyul brand is a raw whole food and in terms of the nutritional aspects, it's one of the only high Vitamin C products on the market that literally is a whole food. A whole food that just happens to have 13% Vitamin C. To make it we simply take the whole frozen fruit, dehydrate it at 40ºC for 16 hours and then mill it into a powder, so in essence all we have done is take away the water: everything else is there in the powder.
Not only is it the highest natural source of Vitamin C, but it also includes everything else your body needs to assimilate the Vitamin C. All the synthetic Vitamin C supplements and extracts are a lot cheaper in terms of milligram for milligram of Vitamin C however, in terms of overall effectiveness they're incomparable. Two different worlds.