I’m excited to have the convenience of this product, knowing that it will fulfil my gap in daily vegetable intake. No more making it from scratch.
Not a supplement. Actual vegetables.
The three blends
What is freeze-drying — and why does it matter?
Freeze-drying removes moisture from whole plants at low temperatures through a process called sublimation. The cellular structure, nutrition and flavour of each plant are preserved completely.
It is not dehydration. Dehydration uses heat, which destroys much of what makes a plant valuable in the first place.
Freeze-drying is standard in pharmaceutical and aerospace industries. GreenSky applies it to whole Australian-grown plants at consumer scale. The only reason the food industry doesn't do this universally is cost.
That has never been a good enough reason for us.
No freezer. No fridge. No cold chain.
Optimal Greens sachets are shelf-stable for two years at room temperature. Store in a cool dry place away from direct sunlight. Each box displays a clear best-before date.
Take a box to work. Pack one for travel. Keep one in the car. Real food, finally free from the freezer.
Australian-grown. Seasonally sourced. Rigorously selected.
We work with Australian farmers and the seasons they grow in. Each batch reflects the region and the season, because that is what real food does.
We prioritise responsibly grown Australian produce that meets our strict quality standards. Our sourcing includes both certified organic and premium conventional farms. What never changes: whole plants, nothing added, nothing hidden.
Gluten-free. Dairy-free. Nut-free. Fully plant-based.
No common fillers. No artificial additives. No synthetic vitamins. Always check the product label for complete allergen information specific to each batch.
Why Optimal?
GreenSky Optimal began as GreenSky Organic built on integrity, real vegetables and a refusal to compromise.
Optimal reflects where we are going.
Not optimal as in optimised, as in the best possible version of a real thing. The whole plant. Freeze-dried. Nothing added. Delivered to your door.
The name changed. The standard didn't.
Backed by independent science.
GreenSky holds active co-investment research approval from the Food and Beverage Accelerator, hosted by the University of Queensland and supported by the Australian Government.
Total project value: $187,489.
Studying: nutritional analysis, prebiotic potential, shelf life and gut health.
Optimal Greens will be among the first Australian food products submitted to a simulated human digestive system trial. There are only two such machines in the world. One is in Belgium. The other is at the University of Queensland, St Lucia, the suburb where GreenSky operates.
We are not required to fund this research. We chose to, because in an industry that makes health claims nobody can verify, nature is the final judge.
Make it a meal
Enjoy an Optimal Greens sachet with just a glass of water or add to any great meal. Here are some simple recipes designed by Chef Patricia Frederick at Warmly Nourished