This post is a continuation of this one on how to brine olives at home.
My olives went from this:
To this:
To see the process, keep reading by selecting the link below.
This post is a continuation of this one on how to brine olives at home.
My olives went from this:
To this:
To see the process, keep reading by selecting the link below.
Darcy over at ArtofDrink.com has taken up pursuit of clear ice. In his first post, he noted something that I did not consider and that could be very helpful.
As the ice increases in thickness it begins to corral all of the impurities into the center of the block. Dissolved air and unfiltered water will cause a cloudy core, but impurities are not the main reason why ice cubes are rarely crystal clear.
This expansion pressure is what makes ice cloudy in the center, not minerals and other debris. The visual flaws are caused by fractures in the ice when the last remaining liquid water in the center of the cube freezes and exerts a massive amount of force on the surrounding ice. The cube is basically cracked from the inside out.
This is in line with what I discovered when I tried all sorts of ways to get the air and impurities out of the ice- in the end it just didn't matter that much.
So in his second experiment, Darcy set about making ice freeze from the bottom up, so that the last part to freeze would be the top. Thus there would be no pressure cracking of the ice. His equipment list was:
As he noted,
The process works, but it isn’t very efficient nor is it practical.
Anyway, there is still more work to be done. Icesperiments will continue!
An index of ice experiments on Alcademics can be found here.
Here is my latest story in the San Francisco Chronicle.
Sweetening drinks can be a science
Camper English, Special to The Chronicle
Friday, January 8, 2010
Gin that bruises, 500-year-old secret recipes and miracle hangover cures. The world of cocktails is rife with myths and misinformation. As we slowly move out of the Dark Ages and into the cocktail Enlightenment, bartenders are starting to use scientific methodology to disprove hearsay and improve drinks.
Some of that science will be explained Jan. 20 at the Exploratorium. A one-night event (sold out, though the Web site promises to share details for home experiments) will include exhibits on the science behind layering a pousse-café, why absinthe turns white when water is added and how cocktails are affected by the shape of ice.
Having experimented with ice in recent years, many bartenders have moved on to studying sugar. Simple syrup is used to balance acid in many cocktails, so several curious bar types have purchased refractometers and pH meters to measure exact levels of each.
Read the whole story on the science of sweetening drinks here.
For the past couple years I've been wanting to try curing my own olives after reading about it on a food blogger's website. Then when Karen Solomon's awesome book Jam It, Pickle It, Cure It
came out I had instructions.
I carefully searched the news for ripe olive time, and noticed that the Sonoma Valley Olive Festival runs in December through February. So I planned to hunt for olives in December at the farmer's markets.
But it turns out there was a problem with that logic. Smartly they throw an olive festival after all the olives have ripened and had weeks or months to cure in brine solution. So when I started looking around at farmer's markets in December the olives were already all gone. Curses!
But wait!
In the last installment of my ongoing adventures making clear ice at home in the freezer, I found that using a hard-sided Igloo cooler works pretty well to create large, mostly-clear blocks.
I was curious to see if faster frozen blocks (with the freezer turned to its maximum cold setting) would come out more or less cloudy/clear than blocks frozen at the minimum cold setting.
Of course, my freezer isn't exactly high-tech. According to my novelty jumping bass fish thermometer I picked up in Finland (thanks for the trip, Finlandia!), my freezer only ranges from -3.2 to 2.2 degrees Fahrenheit.
Anyway, as you can see below, there wasn't much difference at all. Here's the block set on the warmest freezer setting (slowest to freeze):
And here at the coldest setting, which froze faster:
My finger (I should be hand model, right?) indicates where I'd cut the block to get rid of the too-cloudy ice. One was 12 cm and the other 12.5. At that difference, you may as well turn the thing all the way up and have your ice sooner.
More icesperiments to come!
An index of all of the ice experiments on Alcademics can be found here.
Well I certainly wouldn't want any food in there spoiling the flavor of my ice that I spent so much time making.
Sugarcane grows in California, so it's not uncommon to see short stalks of it for sale at farmer's markets and in Latin grocery stores. I was at one of these farmer's markets recently looking for un-cured olives that I didn't find, so I picked up a three-foot long sugar cane segment for two bucks.
Sugarcane is a type of grass that was transported to the New World by Columbus on his second journey. Once the stalks are cut, the sweet juice contained within the blade begins to oxidize- sort of like how an apple turns brown as soon as you cut it- which is why we don't see sugar cane juice for sale in bottles. So when sugar cane is harvested it is transported to the factory for processing immediately. I have no idea how old the stalk I bought was.
Sugar cane juice is directly fermented and distilled to make rhum agricole (from French islands like Martinique) and cachaca (from Brazil), or it is processed to make sugar. The byproduct of sugar production is molasses, which can be fermented and distilled to make all other rum.
Seeing as how I don't have a still at home (yet), I just wanted to play with the sugar cane juice. I found the stalk to be far heavier than I expected, but as it's mostly liquid I shouldn't have been surprised. Sugarcane is very fibrous, which makes it hard to cut and squeeze out the juice. Sugar cane refineries use huge roller mills that squish the sugar cane stalks and shred the fibers.
I cut a section of stalk and sucked on one of the pieces. I expected it to taste like sweetened water, but that wasn't at all the case- sugar cane juice has a bright, delicious raw vanilla flavor. (I've identified this as "Mexican vanilla" and "Lik-M-Aid/Fun Dip stick vanilla'" in tasting notes but maybe "sugar cane vanilla" is a better descriptor.) I haven't had the pleasure of visiting Brazil where they crush sugar cane to make juices on the beach (yet), but I completely get how refreshing this juice can be now.
Having sucked the juice out of pieces of sugar cane, I wanted to see how hard it would be to extract the juice from sugarcane at home. It was hard.
You certainly can't just wring it out. I cut the sugar cane into small chunks and tried muddling. I couldn't muddle more than one or two tiny pieces at once, so this was a slow process that produced very little juice.
Then I tried using a rolling pin (in reality, an empty bottle of Purista Mojito Mix, which is surprisingly delicious) to roll over longer pieces of sugarcane and squish out the juice that way. It worked a little.
I poured the juice into a glass with soda water, and found it to be far less tasty than the juice on its own. Oh well.
So anyway, now that I've determined that sugarcane is really hard to get any juice out of, I need to figure out other ways to extract the liquid (Anyone know where I can buy an affordable sugar cane press?) or other uses for raw sugarcane. Since they sell it in stores around here, people must use it for something…
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