I posted a picture of these on Instagram and have been asked for the recipe. If you have a subscription to The Times you can find it on line, if not, here is a compressed version. I do hope I’m not about to be prosecuted for breach of copyright… The recipe is by Rahul Mandal, of ‘Bakeoff‘ fame and the cookies taste as good as they look.

1 Cream 50g butter, 40g tahini and 90g dark brown sugar. Add one egg and beat until well combined.

2 In another bowl, mix 100g plain flour, 25g cocoa powder, a quarter teaspoon each of baking powder and bicarbonate of soda, 1 tsp ground ginger, half a teaspoon ground cardamom (If you have it. Mine were fine without).

3 Sift half of the flour mixture into the butter mix and beat in. Sift in the other half and fold in along with 50g chopped dark chocolate, 75g chopped white chocolate and 30g chopped crystallised ginger. Cover and refrigerate for a couple of hours to firm up.

4 Heat oven to Gas 4/165C fan. Roll 50g lumps of dough into balls then roll in sesame seeds. Put on baking paper on baking sheet(s). They will spread, so give them plenty of room.

5 Bake for 10 mins then take them out and bash the sheet on the top of the cooker to help the cookies spread. Put them back into the oven for another 5 mins.

6 Cool on tray for 10 mins, then on a cooling rack for as long as you can resist them.

7 Enjoy!  Rahul’s recipe used double the quantities and froze half the cookies ready to bake.  They take an extra 5-7 mins to bake from frozen.

I am well known for my technomuppetry, so it was with major trepidation that I embarked on an attempt to publish my novel The Keepers’ Daughter as an e-book. It turned out to be astonishingly easy, so if it’s something you’ve been considering, jump right in. I used KDP (Kindle Direct Publishing), which held my hand and walked me through the whole process. After only a couple of days, not only do I have an e-book on kindle, but Keeper’s Daughter is, for the first time in quite a while, available as a real, live, physical paperback. No one is more surprised than me that this worked; hats off to KDP, which really does seem to be muppet-proof.

Now comes the hard part: marketing. A particular challenge to a Scot with impostor syndrome. I shall just have to pretend I’m talking about someone else’s book…

In 1939 the search was on for chemicals that could treat bacterial infections – a really serious issue with war looming. In Oxford Howard Florey and Ernst Chain came across Fleming’s work and started to look at penicillin. They infected mice with pneumonia and injected half of them with penicillin. The next day all the injected mice were fine, and all the others were dead. Chain rightly described it as ‘a miracle’ and work began to grow large quantities of mould so that enough penicillin would be available to treat soldiers with infected wounds as well as everyone else who would benefit. It took a long time to find a way to do this, however.

It was 1941 before enough penicillin was produced to treat the first patient. He began to recover, but the penicillin ran out before he was cured and, sadly, he died. In 1942, the amount produced was only enough to treat about 100 people. But by 1943 there was enough penicillin to treat every Allied soldier who needed it. Penicillin helped the Allies win World War 2 – not bad for a tiny mould!

Moulds are a group of fungi. They’re very important in the process of decay, and they also create the ‘veins’ in blue cheeses like Stilton. But there are a few that do something far more important than giving us something tasty to put on biscuits…

In 1928 Professor Alexander Fleming went on holiday (something you could still do, back then…). He was working on the bacteria that cause sore throats, and he left some dishes with the bacteria growing in them in his notoriously untidy lab when he left.

When he returned, he noticed that one dish had mould growing in it and that the bacteria nearest it had disappeared. Intrigued, he grew the mould, tested it and found it produced a chemical that could kill many types of bacteria. The mould was called Penicillium notatum so he named the chemical penicillin. He discovered it couldn’t be stored for long, and that it didn’t harm mice if they were given a dose.

 

…But it was so difficult to extract and purify that scientists lost interest in penicillin! You’ll have to come back tomorrow to find out what happened next

Fungi are a strange and wonderful group of organisms. They’re not animals OR plants: they have  a whole Kingdom to themselves. And not all of them are microbes – that’s obvious, if you’ve ever eaten a mushroom: you didn’t need a microscope to find it on your plate. So, what are they?

If you see a mushroom growing in the ground, you are only seeing the reproductive bit of the fungus. The rest is under the soil, and is a huge network of tiny threads. In fact, the biggest organism in the world is a fungus! No, not a giant mushroom, but the underground bit – and it is truly vast.

It’s a honey fungus which lives in Oregon in the USA. It occupies an area of nearly 10 square kilometres, and is probably at least 2,400 years old, so it’s one of the oldest living things on Earth, as well as the biggest.

Lots of fungi are tiny enough to count as microbes though, and many of them are vital for the decay I wrote about last week. But there’s also one responsible for saving millions of human lives – watch out for the next post!

Still talking rot tonight… Did you realise that if you have a compost heap in your garden, or if you put food waste out for recycling, you are enlisting an army of trillions of microbes to help you?

Making compost is like magic – but it’s just biology (mind you, I find biology pretty magical). I’ve just chucked an apple core on my compost heap; what’s going to happen to it?

First, the local cats will have a sniff, sneer, and stalk off. The local fox might have a quick look, but probably won’t be interested either. Birds will come down and peck at the flesh, and quite a few insects will have a nibble. Eventually, there may only be small pieces left. If you watched them, they would start to turn a bit wrinkly or slimy, and that would show you that decay had started. If you had mega-zoom vision, you would see that what was causing the decay was a mixture of bacteria and fungi and that they were breaking down what had been the apple cells and releasing the chemicals inside them. This might only take a few days if it’s warm and not too dry, but in winter, it could take weeks or even months.

Also in the heap will be lots of other compost heroes – worms. They will be chomping up leaves and digesting them – also releasing chemical nutrients – and the worm droppings will form soil. Yes, that’s right – a lot of what we call soil is worm poo!

If you leave dead plants and kitchen waste in a compost heap for long enough, they go from being smelly bits and pieces to deliciously dark, crumbly compost with a lovely, earthy scent. Congratulations – you’ve just made some great plant food. And you couldn’t have done it without your microbe friends!

Time to meet some more of our microbe friends… the ones who make things decay . Now you may think this is NOT a helpful activity when it happens to food in your kitchen, though it can look quite entertaining if you speed it up – have a look at this.

You may also be wondering why there’s a picture of The Lion King here… It’s the Circle of Life, of course!

The only source of chemicals to build new cells – which could be part of  a carrot or a butterfly or you – is the ones that are already here on earth. But these chemicals are tied up in the organisms that already exist, so what can you use to build the new cells?

That’s where the microbes come in: as they rot dead plants and animals, they are breaking down their cells. This releases the chemicals to be re-used to build new cells, to make carrots, butterflies, humans and all the other marvellous plants and squidgy creatures on earth – and it gets rid of the old, dead ones. If it wasn’t for microbes tidying them away, the planet would be cluttered with dead dinosaurs and Romans and unicorns… Well, maybe not unicorns, but you get the idea.

 

I know this title may seem a bit strange given what we’re all girding our loins to go through, but I worry that a whole generation of children (and some adults) are going to be left with a real neurotic fear of microbes, so I thought I’d try to redress the balance a little bit.

Think of the microbe kingdom the way you think of the animal kingdom: some animals are dangerous and you would steer well clear of them, lots are harmless; some greatly enhance our lives and we would miss them hugely if they weren’t around.

Now, you may think the only connection between microbes and food is that they make it rot, but that’s not true. Your kitchen would be missing quite a few items if it wasn’t for microbes…

Yoghurt is made for us by friendly bacteria changing some of the sugars in milk into lactic acid.

Cheese takes the same process a stage further, separating the solid curds from the liquid whey, packing the soft cheese into a mould and letting it harden. You want holes in your cheese? – Add another sort of bacterium. You want blue veins? – Add a special fungus.

Yeast is a tiny fungus which we use to make bread rise, so; no yeast, no croissants, crusty rolls, sourdough – or even pre-packed white sliced.

All you hipsters who love your fermented foods would have to say goodbye to sauerkraut, kimchi, soy sauce, kefir, miso…

Vegetarians wouldn’t be able to cook with Quorn any more, since it’s made from a fungus.

And we would have to bid a sad farewell to alcohol: beer, wine, cider, spirits… even those sickly-sweet liqueurs.

 

 

I know, it’s been a while… I’ve been busy having a non-online life, doing school visits, taking part in the Newcastle heat of Kids Lit Quiz, tracking my son’s progress as he travels round South America, organising our annual bonfire party (and clearing up after it…). Oh yes – and writing. I’ve been doing a bit of an edit on my book on Mary Queen of Scots, and have dived into writing the first draft of a book about exploration.

I haven’t been completely off line though: in a moment of madness I gave my cat an Instagram account (yes, drink had been taken first), so he is now online as lenthecatsays.

Much more significantly though, I’ve just done a blog on A Secret Diary of the First World War for Reading Force, a splendid charity which works with service families to use books to bring them together when parents are posted overseas. You can read it here.

It’s always a gamble going to see a film adaptation of a book you love… I took a deep breath, crossed my fingers and did it twice in the last week.

First I went to see The Goldfinch. Now this really is one of my favourite books. It’s a long, leisurely read which was criticised in some reviews for meandering too much. I loved the meandering, but I did think that the plot would squash down fairly readily into a two and a half hour movie.

Turns out the meandering was vital. I did enjoy the film, but it was hugely flawed and the relationships never had a chance to build up in a convincing way. Finn Wolfhard (best name ever!) and Aneurin Barnard were both excellent as young/older Boris, and Nicole Kidman was perfectly cast, but I was less convinced by Anselm Elgort as Theo, the central character. Hmmm… Great source, disappointing film.

I spent a lot of time as a child with my nose in DC and Marvel comics, which could hardly be described as high art, but I’m not a huge fan of superhero films. However, I decided to give Joker a try. Wow! It’s a disturbing, dystopian art house movie, with a mesmerising central performance from Joaquim Phoenix. Forget any comic book movie you have ever seen: this is something entirely different. Dodgy source, great film.