DIY Soy Milk

To use up some soy beans that had been lying around the house for too long, I decided to try making some soy milk. The recipe is really easy – the only special equipment you’ll need is a blender. It’s a fun project for a weekend afternoon, and by making your own you can control for example how much sugar goes into the drink.

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Seeking fresh vegetables

If you live in Germany, you’ll certainly have seen posters for, a dating website based in Hamburg. Their posters all bear the tagline “Alle 11 Minuten verliebt sich ein Single über Parship” (A single falls in love every 11 minutes through Parship), and usually feature an attractive person (mostly women) on each poster (examples).

In recent months they seem to have gone all-out with the advertising campaign, and almost every bus or tram stop seems to have at least one ad. The repetitiveness of it has inspired some ideas for how they could branch out into other lucrative markets….

(Disclaimer: I am not associated with nor derive any profit from either or This is purely for my personal amusement.)

Seven tons of old coins

The South China Morning Post had a feature this past October on Werner Burger, an expert on old Chinese cash, and his collection of seven tons (!) of coins stored in a warehouse in Hong Kong. Burger recently published a door-stopper of a book on cash in the Qing dynasty, following up on his first book from 1975.

Chinese coin from the Qianlong era of the Qing dynasty

Chinese coin from the Qianlong era of the Qing dynasty. (By Murberget Länsmuseet Västernorrland [Public domain], via Wikimedia Commons)

My father had a copy of the latter at home, and I remember thinking that it was merely a collector’s guide. I had no idea that this work was based on (just a part of) his collection of 2 million coins. The story of how Burger came into possession of these coins is also fascinating – a friend of his in Hong Kong was importing old Chinese cash from Indonesia to use as scrap metal, and let him pick out some for himself.

Since his 1975 book, which covered the Qing dynasty up to the beginning of the Qianlong emperor’s reign, new archival material from the imperial mint has been discovered. Burger used his collection and the archival material to reconstruct the fiscal history of the era, in order to analyze why Chinese currency became so devalued during the Qing.

What a wonderful story of serendipity and sheer persistence! Cash is such a fascinating thing – at once a physical artefact and an abstract idea, a ritual item (in the anthropological sense) that most people handle every day, somewhat mystical and yet mundane.

New paper! An enduring partnership between ciliates and bacteria

My latest paper has just been published in Proceedings of the Royal Society B! My colleagues and I describe how a partnership between a group of ciliates (a type of single-celled organism) called Kentrophoros and their bacterial symbionts had a single evolutionary origin. This is despite the fact that different species of Kentrophoros can look very different from each other and are found all over the world. The bacteria are also a lineage that is new to science, and that as far as we know is only associated with these ciliates. This means that after the first Kentrophoros and its bacterial partner got together tens or hundreds of millions of years ago, their descendants have diversified into different species and spread themselves throughout the globe, all the while remaining true to each other.


Kentrophoros sp. from the Mediterranean island of Elba. This ciliate carries a few hundred thousand bacterial symbionts (whitish mass) and is almost 2 mm long despite being a single cell.

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