1. Herring and orange juice
Dutch woman Hendrikje van Andel-Schipper, who lived to the ripe old age of 115, swore her longevity was down to a daily dose of herring and a glass of orange juice.

Israeli woman Mariam Amash, who allegedly lived to 120, attributed her longevity to a lifetime of eating vegetables – a diet that gets the tick of approval from Dr Weichselbaum.

Herring is a good source of omega 3 fatty acids, “which are really good for your heart and the whole cardiovascular system”, says Dr Weichselbaum. “And that can help you avoid heart attacks for a long time.”

“Orange juice – if you only drink a glass a day – provides you with Vitamin C and a lot of antioxidants.”

2. Vegetables
The traditional mealtime exhortation to “eat your greens” has the ultimate champion – “120-year-old” Israeli Arab Mariam Amash, who has allegedly notched up six score years thanks to lots of vegetables.

No admonishment from Dr Weichselbaum, who says: “Green vegetables provide you a lot of important vitamins and minerals like iron and carotene and dietary fibre, and vegetables reduce the risk of heart disease and cancer. Make sure you eat a full range of coloured veetables in a balanced diet.”

3. Custard cakes
One out of left-field by Japanese centenarian Mitoyo Kawate, who ascribed some of her 114 years to a regular intake of custard cakes. Japanese custard’s health-giving qualities (we’re basically talking a straight-up-and-down recipe of sugar, water, butter and vanilla extract) do not figure prominently in the world’s good eating guides. An oversight?

The brow of Dr Weichselbaum furrows: “It depends on how many she’d eaten. It’s probably not the custard cakes that made her live so long, but if it was as part of a balanced diet then there’s no need to cut out the sweets.”

Mrs Kawate, it appears, has gone to her grave giving custard the credit for all the hard work green tea and sashimi were doing.

A lifetime of drinking probably won’t extend your life, but many centenarians, like Scottish woman Lucy d’Abreu, have enjoyed the odd tipple.

4. Alcohol
There’s no shortage of volunteers happy to lay the secret of a long life on the odd tipple. Lucy d’Abreu, for instance, who passed away in Scotland aged 113, believed it was her “customary sun-downer of brandy and dry ginger ale” that helped her avoid an early death.

According to Dr Weichselbaum, alcohol in moderation “has been shown to lower the risk of heart disease but it can increase the risk of some forms of cancer.” Perhaps it was the ginger ale....

5. Sausage in bread
Rural Ukrainian Hryhoriy Nestor’s greatest extravagance was a slice of sausage in a bread roll – he ate a simple diet of home-made food like cabbage and sausage and warm potato and herring. He never married and led an active life on his farm in the west of Ukraine to the last.

Dr Weichselbaum is resistant to the suggestion of sausage as a lifesaver. “I would say eat processed meat in moderation – eat sausages in moderation in a balanced diet with plenty of vegetables.”

6. Bread, dripping, salt
Yorkshirewoman Ada Mason’s longevity tip is a one-woman two-fingered salute to the healthy-eating brigade. She lived to 111 thanks to “eating bread and dripping every day – lots of it with lots of salt on,” according to her grand-daughter.

“In this case I’d say if she ate a lot of this she managed to become 111 despite the dripping and salt,” exclaims Dr Weichselbaum. “Dripping is not only pure fat but high in saturated fats which raises the risks of heart disease, and the lots of salt leads to high blood pressure which is also a heart disease risk.”

Foods like porridge should make up one-third of our diet, according to Dr Weichselbaum.

7. Porridge
The traditional Scottish breakfast has many a cheerleader in the healthy eating camp, and Scot Annie Knight was no stranger to an oat-based start to the day – she claimed it helped her reach the age of 111.

“Food like this should make up a third of our diet,” says Dr Weichselbaum. “Porridge is a great source of fibre – and if you have it with milk it’s a great source of calcium too.”

8. Boiled rice and chicken
No booze for retired silkworm breeder Yukichi Chuganji, who lasted until the respectable age of 114 despite an aversion to vegetables. Meat and milk were on the list, but his favoured dish was boiled rice with pieces of chicken.

“Rice is a great source of starch, and if it’s wholemeal rice it’s a very good source of fibre, vitamins and minerals,” says Dr Weichselbaum. But she adds: “It is important to have a variety of vegetables in your diet.” That’s you told, Mr Chuganji.

9. Cottage cheese
Sakhan Dosova is, Kazakhstani authorities say, the world’s oldest woman. She has allegedly just turned 130 – a good 16 years older than the next-oldest person on the list. She stays away from sweets and instead is partial to cottage cheese.

“Cottage cheese is a good source of calcium, which is great for your bones and teeth,” says Dr Weichselbaum. “Its fat content is relatively low compared to other cheeses – it contains about half of the fat you find in cheddar cheese. I can’t really comment on bacterial strains they may have used in this region.”

10. Donkey milk
You might have a to wait a while to find this in the aisle of your local Tesco, but apparently Ecuadorian Maria Esther de Capovilla’s age of 116 was down to her regularly drinking the milk from the family donkey as a child.

Cue the sound of heads being scratched at the British Nutrition Foundation. “I can’t really comment on this,” Dr Weichselbaum admits.