Peace Memorial Park, Hiroshima


Glühwein aus der Mikrowelle

Eine Tasse Glühwein Was gibt es schöneres, als sich in der kalten Jahreszeit zu Hause selbst eine heiße Tasse Glühwein oder Fruchtpunsch zuzubereiten. Aber geht das auch in der Mikrowelle?

Klar geht das, und sehr gut sogar, wenn man ein paar grundsätzliche Dinge beachtet.

Wichtig ist, dass der Glühwein nicht kochen darf. Die perfekte Temperatur für Glühwein ist um die 72°C. Ab 78°C verkocht der Alkohol, ein wichtiger Aromaträger. Erhitzt man ihn weiter, verändert sich zudem das Fruchtaroma. Überhitzter Glühwein schmeckt fade und bitter.

Es kommt also darauf an, die richtige Zeit an der Mikrowelle einzustellen. Aber auch die richtige Leistung ist wichtig. Mikrowellen dringen in Flüssigkeiten nur wenige Zentimeter tief ein, der Rest wird indirekt durch Konvektion erwärmt. Wählt man einfach die höchste Leistung, verkocht der Glühwein am Tassenrand, während er in der Tassenmitte noch relativ kalt ist. Bei kleineren Leistungsstufen kann sich die Hitze im Getränk gleichmäßiger verteilen.

Machen wir uns also auf die Suche nach dem passenden Rezept für unsere Mikrowelle.

Wichtig ist, möglichst gleiche Startbedingungen zu haben. Der Glühwein sollte vor der Zubereitung also immer dieselbe Raum- oder Kühlschranktemperatur haben, und man nimmt am besten auch immer die gleichen (und natürlich mikrowellengeeigneten) Tassen.

Das Rezept für meine Mikrowelle: 2 Glastassen zimmerwarmen Glühwein à 0,2 Liter, 440 Watt, 4:30 Minuten.

Mit diesem Rezept als Ausgangsbasis kannst du nun die richtige Leistung und Zeit für deine Mikrowelle finden. Du bereitest den Glühwein zu, entnimmst ihn aus der Mikrowelle und prüfst mit einem Tee- oder Kochthermometer die Temperatur. Ist der Glühwein zu kalt, verlängerst du die Zubereitungszeit beim nächsten Mal um ein paar Sekunden. Wurde er zu heiß, reduzierst du die Zeit. Schmeckt der Glühwein verkocht, reduzierst du die Leistung oder die Zeit etwas. (Das Thermometer bitte nicht mit in die Mikrowelle stellen!)

Wenn du nur ein Glas zubereitest, halbiert sich die Zeit in etwa. Bei vier Gläsern verdoppelt sie sich. Das ist aber nur eine Faustregel. Es lohnt sich, auch für andere Mengen durch Versuche die optimale Zeiteinstellung zu finden.

Hast du dein Rezept gefunden, bereitet dir deine Mikrowelle quasi von selbst den perfekten Glühwein zu. Du musst nicht wie beim Herd ständig rühren und die Temperatur überwachen, sondern wartest einfach nur auf den Signalton.

Wichtig: Keinesfalls Flaschen, Dosen, Getränkekartons oder verschlossene Behälter auf diese Art erhitzen, sondern immer nur einzelne Tassenportionen.

20 Years Shredzone

The shredzone is celebrating its 20th birthday today! 🎂

Actually, my personal homepage is much older. It had started some day around 1995, when I was learning HTML. My first website was just a bunch of hand-made static pages. They were published on the free webspace of my ISP.

In 1998 I recreated my homepage, and called it "shredzone" for the first time. It was still using static pages, but now they were generated by running some scripts on my Amiga (there is a separate article about that if you're interested). This new site got bigger and bigger, and at some point ran out of quota on my ISP's webspace.

On April 15th 2000, I moved my site to a professional web hosting provider. I also bought my very first domain on that day. Now, having content and also a dedicated domain, the shredzone was finally complete!

In the coming years, I was switching from Amiga to Linux, and I was learning a lot of JavaScript and PHP. In 2003, I redesigned the website from scratch again. It was now using a self-made Content Management System called Akiko. A cool feature of Akiko was that I could use different seasonal page templates. On Christmas there was snow and a snowman, while on Halloween the pages were decorated with pumpkins and a manga witch that I had drawn myself.

Some years later, blogs were getting popular. I quickly added a blog feature to Akiko, and was learning about writing my own weblog since then. I found out that this format was much more useful for me, much better than the tree-structured contents I had before.

Soon I had reached the limits of Akiko. Writing a new blog article was tedious, especially when pictures were involved, so I badly neglected my blog for a couple of months. It couldn't go on like that, and I decided to write my own open source blog system from scratch. It is called Cilla and is written in Java now. Just in time for the 10th birthday, it was finally ready for prime time. My new weblog had a sleek and modern design, with a random photo on the top of each page. And it was much easier to use. Some of the old contents were migrated to my new blog, while many other outdated (or embarassing 😅) stuff was just dumped. But still my very first blog record goes back to the beginning of Akiko in 2003.

I liked the new design. However, it was cluttered with all kind of extras that have been modern when the blog scene started (like a calender and a tag cloud). Also, mobile devices have gotten ubiquitous over the years, but the old design was not optimized for them and just looked ugly on a small display.

So, in 2018 there was another major redesign, the one you are seeing now. It still runs on Cilla, but everything unnecessary has been removed, and some other necessary stuff like the comments fell victim to GDPR. On the other hand, it has a responsive design now.

Looking back these 20 years, it was a very interesting time. I have learned a lot about the internet, about websites, programming, and blogging. Now I'm curious what the Shredzone is going to look like in 20 years.

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Shredzone à la Amiga

Look what I have found... This is my very first shredzone, as it was online from 1998 to 2003. First it was hosted by my internet provider. Then, on April 15th 2000, I registered my own domain – – and moved my site to a professional hoster.

The site did not use a fancy content mangagement system, but consisted only of static HTML pages. It was built on my Amiga using a preprocessor called HSC, an acronym for HTML Sucks Completely. 😜 Some parts like the gallery or the download area were generated by accompanying ARexx scripts. It was incredibly easy to add content to the site. Basically it was just adding or changing a file, and then invoking smake to rebuild the affected parts of the site within seconds, including the navigation. It was a big advantage that I was going to miss badly later.

At that time I did not use CVS yet, so sadly all the past versions and changes have been lost. The only version I still have is the final one on my Amiga harddisk. I have found the project today, by a rather lucky accident. It was only the source code though, the final compiled version has got lost over the years. There is a Linux port of HSC, so basically I could rebuild the site on my Linux machine. But the ARexx parts require an Amiga environment, and porting them to Linux would have consumed too much time.

So I started an Amiga emulator and, thanks to the good shape of the project that the past Amiga me has left the present Linux me, I actually only needed to run smake to rebuild the entire homepage in just 3 minutes.

The requirement to run on an Amiga, was what later broke the neck of this homepage. When the Amiga platform died, I moved on to Linux, but I could not move my homepage with me. So, in 2003, I replaced it with a self-made content management system that was written in PHP and was called Akiko. It had some nice features, but on the other hand it was rather tedious to add new content. Because of that, I badly neglected my homepage in those years.

In 2010, Akiko was replaced by a self-made blog system that is written in Java and is named Cilla. Even after a major redesign in 2018, it is still in use today. 🙂

Sombrero de Chasna

The "Sombrero de Chasna" is a table mount that is 2400 meters tall and looks like the top of a sombrero hat, hence its name.

Our hike starts at the área recreativa Las Lajas. It's a public picnic site with a parking area that is sufficiently big, but the poor road conditions of the last few meters make it difficult to reach unless you have rented an SUV. 😅

From there we start the ascent to the summit of the Sombrero. The trail is a little hard to find. At some parts, only cairns show the way. A few minutes away from the Sombrero, there is the caldera edge with a spectacular view on the Las Cañadas plain.

The hike to the summit is a little exhausting. You certainly need good hiking shoes, hiking poles, and a good condition. But the spectacular views are worth it. It's the third time we have been up there now, and definitely not the last time.

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Observatorio del Teide

In the heart of Tenerife, and 2400 meters above the sea, is the Observatorio del Teide. While its sister observatory on the island of La Palma is mainly used for observing the night sky, this observatory is mainly used for observation of the sun.

There are guided tours every week. We joined one of these tours, and had the chance to see the observatory, the inside of one of the buildings, and we also had a look at the sun with a special telescope.

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