A world-renowned longevity expert has revealed the surprisingly simple meal he believes could help you live to 100 - and it contains just four humble ingredients.
Dan Buettner, a National Geographic fellow who has spent decades studying the world's longest-living populations, shared the recipe with his 817,000 Instagram followers, calling it one of the 'healthiest meals on the planet'.
'One of the healthiest meals on the planet has... four ingredients,' he said.
'Black beans, avocado, sweet potato, [and] rice - this is how the world's longest-living people eat every day,' he continued, pointing to the dietary habits of so-called Blue Zones, which are regions where people routinely live past 100.
In a video accompanying the post, Buettner broke down exactly how he prepares the dish, describing it as both simple and 'maniacally delicious'.
'My favourite Blue Zones recipe... 'I bake the sweet potato. I cook the rice, I stew the beans, I cut up the avocado.
'I mix them all together, and if I'm feeling crazy, I put some hot sauce on it.
'You have all the ingredients for longevity there and a combination that's maniacally delicious.'
World-renowned longevity expert Dan Buettner has revealed the surprisingly simple meal he believes could help you live to 100.
The no-fuss meal reflects the core principles Buettner has long championed through his research, which revolves around a predominantly plant-based diet built on whole, unprocessed foods.
It's a philosophy he not only studies but lives by.
The 65-year-old has previously revealed his own doctor described him as the 'healthiest patient' in his practice, crediting his daily eating habits for the result.
While wellness trends often focus on expensive supplements or high-protein diets, Buettner insists longevity is far less complicated - and far more affordable.
He has repeatedly pointed to traditional dishes eaten in Blue Zones, including the famed Sardinian minestrone, as the real secret to a long life.
Packed with beans, vegetables and grains, the soup has been eaten daily for generations in parts of Italy where people consistently reach triple digits.
'Every day I start my day with a Sardinian minestrone,' he previously shared, explaining the dish provides sustained energy, fibre and essential nutrients.
His latest four-ingredient bowl follows the same blueprint. Beans deliver plant-based protein and fibre, while sweet potato offers slow-releasing carbohydrates and antioxidants.
Avocado adds healthy fats, and brown rice rounds out the meal with wholegrain energy.
According to Buettner's extensive Blue Zones research, this combination of legumes, vegetables and unrefined carbohydrates is strongly linked to lower rates of chronic disease, reduced inflammation and longer lifespans.
But diet is only one piece of the puzzle.
Despite his strict approach to food, Buettner has said he prioritises connection just as highly, revealing he often dines out every night to maintain strong social ties.
'I eat mostly a whole food, plant-based diet,' he said. 'But I also know being connected socially is part of that cluster of factors that leads to 100.'
Fans have embraced his refreshingly realistic outlook, with many praising the idea that longevity is built on consistency rather than extremes.
'I love that you said being part of the social portion of the dining is important,' one follower commented, while others admitted it can be 'very difficult' to stick to purely plant-based options depending on where they live.
For Buettner, however, the formula remains simple with real food, eaten regularly, shared with others.
'I eat healthy, I stay connected, I feel pretty good,' he said.
And judging by the global fascination with Blue Zones - and the ease of his latest four-ingredient meal - it's a recipe millions are more than willing to try.