A taste test for fish sauces.

My friend Ranjit is working on this Crash Course in Psychology. Since I’ve never taken psychology, I am learning a lot!

Apparently the solution for lax editorial standards is to scrub away the evidence. (via Kevin Chen).

Some thoughts on high performance computing vs. Map Reduce. I think about this a fair bit, since some of my colleagues work on HPC, which feels like a different beast than a lot of the problems I’ve been thinking about.

A nice behind-the-scenes on Co-Op Sauce, a staple at Chicagoland farmers’ markets.

I occasionally enjoy Thai cooking, so I appreciated some of the comments made by Andy Ricker.

I recently learned about India’s Clean Currency Policy which went into effect this year. I still have some money (in an unpacked box, probably) from my trip this last fall, and I wonder if any of it will be still usable when I go to SPCOM 2014 this year. That sounded a bit crazy to me though, further investigation indicates that an internal circular leaked and it sounds like a more sensible multi-year plan to phase in more robust banknotes. My large-ish pile of Rs. 1 coins remains useless, however.

An Astounding Result — some may have seen this before, but it’s getting some press now. It’s part of the Numberphile series. Terry Tao (as usual) has a pretty definitive post on it.

Avi Wigderson is giving a talk at Rutgers tomorrow, so I thought about this nice lecture of his on Randomness (and pseudorandomness).

There’s been a lot of blogging about the MIT Mystery Hunt (if I wasn’t so hosed starting up here at Rutgers I’d probably blog about it earlier) but if you want the story and philosophy behind this year’s Hunt, look no further than the writeup of Erin Rhode, who was the Director of the whole shebang.

Last year I did a lot of flying, and as a result had many encounters with the TSA. This insider account should be interesting to anyone who flies regularly.

I’m in the process of moving to New Jersey for my new gig at Rutgers. Before I start teaching I have to go help run the the Mystery Hunt, so I am a little frazzled and unable to write “real” blog posts. Maybe later. In the meantime, here are some links.

The folks at Puzzazz have put out a bevy of links for the 200th anniversary of the crossword puzzle.

The UK has issued a pardon to Alan Turing, for, you know, more or less killing him. It’s a pretty weasely piece of writing though.

An important essay on women’s work: “…women are not devalued in the job market because women’s work is seen to have little value. Women’s work is devalued in the job market because women are seen to have little value.”. (h/t AW)

Of late we seem to be learning quite a bit about early hominins and hominids (I had no idea that hominini was a thing, nor that chimps are in the panini tribe, nor that “tribe” is between subfamily and genus). For example,
they have sequenced some old bones in Spain. Extracting sequenceable mitochondrial DNA is pretty tough — I am sure there are some interesting statistical questions in terms of detection and contamination. We’ve also learned that some neanderthals were pretty inbred.

Kenji searches for the perfect chocolate chip cookie recipe.

My cousin Supriya has started a blog, wading through soup, on green parenting and desi things. Her recent post, Pretty in Pink: Can Boys Wear Pink? made it to HuffPo.

Larry Wasserman is quitting blogging.

Maybe I should get a real chef knife.

If you have a stomach for horrible things, here are some images from the Nauru immigration center, where hundreds of (mostly Iranian) asylum-seekers are kept by the Australian government (via mefi).

At Rutgers, I am going to be in a union. Recent grad student union actions have come under fire from peeved faculty at UChicago (a place with horrendous institutional politics if I have ever seen one). Corey Robin breaks it down.

The English version of the Japanese cooking site Cookpad was launched recently. The launch means more lunch for me!

In case you wanted to listen to old African vinyl albums, you’re in luck.

I have a burning-hot hatred of payday loan places, so this Pro Publica piece just stoked the fire.

Talking robots… in spaaaaaaaaace!

A tumblr on how we make progress in research.

My friend Amrys worked on the Serendip-o-matic, a tool that may be more useful for those in the humanities than us engineer types, but is pretty darn cool.

A few months ago I was home visiting my parents and we had a lunch with a few other Maharashtrians. The conversation turned towards food, and in particular ingredients that are important for making authentic garam masala. Garam masalas vary widely by region in India, and the two ingredients in question were dagadful and nag kesar. I had never really heard of these spices so I did a bit of research to learn more.

Dagadful (Parmelia perlata) is a lichen, not to be confused with the stone flower Didymocarpus pedicellatus, which is a plant that grows on rocks and is called charela in Hindi, I believe. The confusing thing is that both plants are used for herbal remedies, but the former is used for culinary purposes.

If you search for “nag kesar” you may find Mesua ferrea, a hardwood tree that grows in India and surrounds. That’s not where the spice comes from, however. This sparked the most debate at lunch, but I think I’ve figured out that the spice is the bud of a different tree, Mammea longifolia. Both Mesua and Mammea are in the family Calophyllaceae, which probably led to the name clash.

A rather pretty video of an L-system made by my friend Steve.

LACMA, which I finally saw with a friend in February, has decided to offer high-resolution downloads of many of the items in its collection. This Ganesha has a pretty impressive belly. Via MeFi.

This may answer David Bowie’s question.

This slideshow makes me want to go to Slurping Turtle again.

Sometimes I wish we could just name p-values something else that is more descriptive. There’s been a fair bit of misunderstanding about them going on lately.

Konnichiwa, Varshney-san. Your post on the potato inspired me to read the papers you mentioned as well as a reference suggested by a friend here in Chicago:

Sucheta Mazumdar, “The Impact of New World Food Crops on the Diet and Economy of China and India, ca. 1600-1900.” Food in Global History. Ed. Raymond Grew. Westview Press, 1999. 58-78.

The Columbian Exchange refers to the interchange of foodstuffs, technologies, and disease after European contact with the Americas. In exchange for offering pestilence, brutal colonialism, and genocide, Europeans got a variety of staple crops with which they could support their burgeoning populations and which would later sustain the Industrial Revolution:

The exchange introduced a wide range of new calorically rich staple crops to the Old World—namely potatoes, sweet potatoes, maize, and cassava. The primary benefifit of the New World staples was that they could be grown in Old World climates that were unsuitable for the cultivation of Old World staples. (Nunn and Qian)

In addition, the discovery of quinine in the Andes enabled Europeans to invade and colonize tropical regions. In addition to the trans-Atlantic slave trade, this expansion introduced the widespread planting of cash crops such as rubber in Africa. Being an economics paper, there are some sobering quantitative measures to drive home the horrors of colonial exploitation:

The population of the Congo is estimated to have been about 25 million prior the rubber boom, in the 1880s. In 1911, after the peak of the boom, the population was 8.5 million, and in 1923 after the completion of the boom, it was 7.7 million. If one compares the population losses relative to the production of rubber, an astonishing conclusion is reached: an individual was “lost” from the Congo for every ten kilograms of rubber exported (Loadman, 2005, pp. 140–41).

The potato paper covers the effect of potatoes and tries to estimate (numerically) the impact potato cultivation had on population growth and urbanization in Europe. It is somewhat elusive to me what such a quantification “means,” but it’s of a piece with what Ian Hacking describes in The Taming of Chance : the torrent of printed numbers led to the publication of attendant “studies” slicing and dicing the numbers in statistical ways in order to “make sense” of them. The second Nunn and Qian paper covers capsicum, tomatoes, cacao, vanilla, coca, and tobacco, and contains some fun nutritional facts and trivia:

  • Capsicum is high in vitamins A, B and C, magnesium, and iron, and the extra saliva produced by capsacin helps digestion.
  • “Greece consumes the most tomatoes per capita… The tomato has been so thoroughly adopted and integrated into Western diets that today it provides more nutrients and vitamins than any other fruit or vegetable (Sokolov, 1993, p. 108).”
  • “[I]n Roald Amundsen’s trek to the South Pole, his men were allocated 4,560 calories per day, of which over 1,000 came from cacao (West, 1992, pp. 117–18).”

My interest came more from vegetables that almost define Indian cuisine : tomatoes, potatoes, and chilies. Mazumdar’s article focuses on the effect new crops had on China and India. Specific to this context,

There were two major periods of introduction of American plants into Asia. The first wave, in the sixteenth and seventeeth centuries, included sweet potatoes, maize, potatoes, jicamas, capsicums (chile peppers), squashes, and peanuts, cashews, custard apples, guavas, avocadoes, tomatoes, papaya, passion-fruit, pineapples, and sapodillas… In the second wave, American plants, such as cocoa and the sunflower, were brought to India even more recently in the twentieth century.

With them came new words of course — South Asian readers may know of a certain fruit as sapota (in the south) or chiku (in the north), both of which come from a Meso-American word (not sure of the language) chicosapote. The word achar for pickles came from the Carib axi meaning chile pepper.

The paper draws a distinction between how land ownership practices in India and China made a difference in how fast new foods were incorporated into the common diet. In China, a number of reforms allowed “tenancy rights to become inheritable” for peasants, meaning they had an incentive to say in place and try to extract more productivity from the land they had. The new crops, especially the sweet potato, became staples because they provided more calories per acre, and because they were drought- and pest-resistant, required less labor (especially over rice), and could grow in poor soil. Mazumdar writes:

[In the 1920s in south China] sweet potatoes regularly provided a supply of at least three to four months’ worth or food for practically everybody living in the countryside… they were eaten fresh, baked, boiled, or mashed with pickles.. ground into flour and made into noodles, bread, or a gruel… or stirred into a hash.

The sweet potato revolutionized the lives of peasants in China, giving them more calories and freeing time and labor to grow cash crops. Corn and peanuts were also widely cultivated, since corn could also grow in nutrient-poor soils and peanuts are good nitrogen-fixers and could be grown with sugarcane.

India was a different story — there was more arable land and “relatively low population growth between 1600 and 1850.” Due to military conflicts and tensions with zamindars (landlords), villages would often up and leave, transplanting themselves further from conflict or interference. This meant that unlike China, rural farmers were not as tied to specific locations during this period. Colonialism changed all that — people were pinned down and agriculture was commercialized, so in the 19th and 20th centuries American crops started flourishing. The Brits promoted the potato heavily, and increased urbanization brought it and the tomato into the mainstream. Although it’s hard to think of Indian food without tomatoes, potatoes, and chilies, these ingredients were only integrated around 150 years ago!

I’m sick today so here are some links.

Click That Hood, a game which asks you to identify neighborhoods. I was lousy at San Diego, but pretty decent at Chicago, even though I’ve lived here for half the time. Go figure.

For those who care about beer, there’s been some news about the blocked merger of Inbev and Modelo. I recommend Erik’s podcast post on the structure of the beer industry (the three-tier system) for those who care about craft beer, and (with reservations) Planet Money’s show on the antitrust regulatory framework that is at work here.

Remember step functions from your signals and systems course? We called them Heaviside step functions after Oliver Heaviside — you can read more about him in this Physics Today article.

Did you know that Pad Thai’s “birth and popularity came out of the nationalist campaign of Field Marshal Plaek Pibulsongkram, one of the revolutionary figures who in 1932 pushed Thailand out of an absolute monarchy?” Neither did I!

I need this album, since I love me some Kurt Weill. I can also live vicariously through NPR’s list of SXSW recommendations.

I went to H-Mart this weekend and decided to check out the greens to see if I could discover something new and tasty. I passed up the enigmatically named Tacochoy since tacos were not on the menu for the week:


Not really sure what this was, but it did look tasty — maybe next time.

What I did pick up was some Korean red-leaf mustard greens and something called “dot greens” (돋나물, or dotnamul) which I eventually (through teaching myself some Hangul and googling) figured out is Sedum sarmentosum, or graveyard moss:

"Dot Greens" or "dotnamul" are the sedum leaves

“Dot Greens” or “dotnamul” are the sedum leaves

Namul seems to refer to a general class of seasoned vegetable banchan-like dishes, so I decided to take a cue from existing websites and made a dipping sauce with gochujang and had them pretty much raw.

Sedum, all dressed up and nowhere to go but my belly

Sedum, all dressed up and nowhere to go but my belly

Here’s the recipe!

1.5 tbsp gochujang
juice from half a lemon
1/2 tsp sesame oil
scant 1/2 tsp rice vinegar (optional)
toasted sesame seeds

Whisk everything but the seeds and pour over salad. Sprinkle seeds on top.


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