5 ms·
Iridescent Tempered Chocolate
- anubistheta 7y agoTake a look at another person's approach: https://www.youtube.com/watch?v=SoTi0tM4yQ8 https://www.youtube.com/watch?v=SoTi0tM4yQ8
- gerdesj 7y agoVery pretty but the intro looks like syrup and not chocolate which is what this post is about. I know that your link promises chocolate later but that's no good here 8)
- jan_Inkepa 7y agoIf you skip to the end you'll see chocolate as well.
- jkqwzsoo 7y agoThere are several pieces of irridescent chocolate (white and milk, it looks like) shown in the first shot, 15 seconds in.
- catalogia 7y agoHe switches over to discussing chocolate at the 20 minute mark.
- the_pwner224 7y agoThat YouTube channel is really great. Their older videos have a lot of lasers but they have expanded into many other subjects. I found them when searching about magnetohydrodynamics on YT. Highly recommended. I generally prefer consuming text but never have an issue sitting through their 30 minute long videos. Recently they had a video about making very high performance thermal paste and were selling it, but three weeks later it still hasn't shipped and my email a week ago is unanswered. A shame, because their videos are still really great - I wanted to support them financially because the stuff they do is not cheap. But I guess selling a higher quality product for cheaper than the competitors isn't really a great monetization strategy. Meanwhile I had to settle for worse product at a higher price for my high power led project :(
- deleted 7y ago[deleted]
- jcims 7y agoSomehow I knew it was going to be Tech Ingredients based on the confluence of topics. At least now i know he's human haha. (highly recommend the channel, shows you how to make everything from brilliantly colored smoke bombs to banana brandy to plasma tubes and peltier refrigerators in a fairly precise and clinical manner)
- borski 7y agoThis guy is the Walter White of chocolate.
- raverbashing 7y agoVery nice video and approach to the problem (the chocolate part start about 20min in but the candy part is definitely worth a watch as well)
- arijun 7y agoWow, thanks for turning me on to this guys channel. I like how he goes through the science in a way that’s accessible but doesn’t skimp or handwave.
- traverseda 7y agoYou can 3D print stuff on diffraction gratings to produce the same effect: https://learn.adafruit.com/3d-printing-on-diffraction-grating-sheets https://learn.adafruit.com/3d-printing-on-diffraction-gratin...
- deleted 7y ago[deleted]
- lucb1e 7y agoTitle should include the tweet's author, that would have made me click a Twitter link without hesitation. I loved Samy Kamkar's work already but didn't know he also did hacked food!
- disqard 7y ago...and three months ago, he uploaded a short clip of his homebrew magnetron sputtering setup!
- raverbashing 7y agoThat's weirdly amazing! One of the possible issues is that the chocolate contracts when cooling down, possibly changing or damaging the diffraction imprint. Chocolate making is a whole art (and technique) onto itself. Producing fine chocolate requires advanced machines (at least for 19th/20th century standards).
- kibibyte 7y agoI'm not sure what you consider to be "advanced", but you can get surprisingly really far with just machines that can fit on your kitchen countertop and still produce some pretty high quality flavorful chocolate. In fact, the main equipment that you need to purchase is a tabletop melanger, which is required to refine the chocolate. (Nowadays, you can purchase melangers specced for refining chocolate for 24-72 hours, but perhaps 5-10 years ago, many people were abusing melangers (wet grinders) designed to make dosa batter in 30 minutes.) For the whole process, pretty much all you need is: 1. an oven to roast cocoa beans (though you probably want a tabletop coffee roaster for reliable results) 2. a rolling pin to break apart roasted beans into nibs and husk (this does get old pretty fast after 5 batches of chocolate, so people recommend moving onto another kitchen countertop device, the Champion Juicer) 3. a hair dryer to separate husk from nibs 4. a melanger, as mentioned above, to refine the nibs (with any desired additives like sugar and milk powder) for 24-72 hours 5. a couple of bowls and a good thermometer for tempering 6. (optional) plastic molds for shaping your chocolate. https://chocolatealchemy.com/how-to-make-chocolate-the-complete-text-guide https://chocolatealchemy.com/how-to-make-chocolate-the-compl... (Off-topic: is there a way to format a bulleted/numbered list to not require separate paragraphs?)
- raverbashing 7y agoThanks for this description of the process. I was mostly referring to the presses that separate the cocoa butter from the rest. It's not an easy process (example https://www.youtube.com/watch?v=HzcN3cbikzA https://www.youtube.com/watch?v=HzcN3cbikzA ). Though as I pointed out, it's probably 19th/20th century technology.
- 7y ago
- randogp 7y agoA Swiss startup worked in this direction to offer brand protection and consumer engagement http://www.morphotonix.com/chocolate/ http://www.morphotonix.com/chocolate/
- WilTimSon 7y agoCan someone explain the science behind this process? It looks really cool but I don't understand how this is achieved. He puts the chocolate into a vacuum chamber and molds it with something? Or is it the vacuum itself that adds the effect without the chocolate being merged with anything?
- kd5bjo 7y agoDiffraction gratings are composed of a series of ridges spaced very closely and regularly, and this physical shape is transferred to the chocolate through the molding process. Light bouncing off of the different ridges creates an interference pattern which varies for different wavelengths of light, creating a rainbow effect. https://en.m.wikipedia.org/wiki/Diffraction_grating https://en.m.wikipedia.org/wiki/Diffraction_grating
- heftig 7y agoGoogle for a "reflective diffraction grating". If you shape the surface a certain way - grooves with a size near the visible wavelength, AFAI understand - you can get the reflected light to interfere with itself. The imperfections which vary the groove size then result in this rainbow effect.
- bboreham 7y agoIt’s moulded. The vacuum helps to make the end result hold the shape better.
- flir 7y agoThere's a patent for casting holograms on chocolate by the same process. (Holograms rely on the same constructive interference effect as diffraction gratings). You need enough sugar in the mix to produce a hard shiny surface to the chocolate. You can also cut a record on chocolate, but you don't get more than a couple of plays before the needle wears away the grooves.
- fractallyte 7y agoHey, snap! Your comment appeared while I was typing mine! (https://news.ycombinator.com/item?id=23131386 https://news.ycombinator.com/item?id=23131386)
- flir 7y agoIt was Scientific American. When I was an unemployed pre-internet late-teen, I went through my local library's entire collection, right back to the first Mathematical Games column, and photocopied everything I found interesting. That was one of the articles I snagged. I did successfully make some iridescent chocolate after that, with a diffraction grating I bought from Edmunds Scientific as a mould. By the by, you may be interested in this: https://www.litiholo.com/ https://www.litiholo.com/ I'm probably going to buy one at some point.
- slavik81 7y agoThe patent (expired in 2005): https://patents.google.com/patent/US4668523A/en https://patents.google.com/patent/US4668523A/en A New York Times interview about it: https://www.nytimes.com/1997/04/02/garden/where-no-candy-has-gone-before-light-as-the-secret-ingredient.html https://www.nytimes.com/1997/04/02/garden/where-no-candy-has...
- flir 7y agoThanks for looking those up. I wonder why it never took off - adding surface interest without adding colourings seems like a no-brainer to me.
- fractallyte 7y agoYears ago, I read an article (perhaps in Scientific American?) about some scientists who had created holograms on the surface of chocolate. Their plans to commercialize it never materialized, and I haven't been able to find the article again. I still remember one of the suggested uses of the hologram: to show an image of the filling.
- supernova87a 7y agoClever and fun. And I can just imagine how this can assist the teaching of quantum mechanics: "Professor, I didn't really understand what just happened with the double slit experiment there. (munch) I'm gonna need some more chocolate."
- davidu 7y agoSamy is my hero. (same guy) https://en.wikipedia.org/wiki/Samy_(computer_worm) https://en.wikipedia.org/wiki/Samy_(computer_worm)
- yunruse 7y agoIs the charge here really proportional to the crime? As frustrating as it might be to MySpace, it's fairly benign, and it highlighted a vulnerability that could have been far, far worse. Surely those three years without Internet would have been better spent highlighting more vulnerabilities, with the threat of jail time if harm is done again.