View allAll Photos Tagged Extraction
this is an artificial human face blended with one of a Tiger.....
thanks for looking in....appreciated....best bigger......hope you have a Great Week
This is how I make coffee in the morning. As one would hope with routines, both the speed and the results of this one are improving with time.
Espresso is the result of almost-boiling water at high pressure (~8 bars or 116 PSI) being forced at a consistent rate through coffee beans ground to a specific range of fineness.
This video doesn't show the grinding of the beans, distribution and tamping - basically, the first two-thirds of the process. This is just about brewing, the "fun" part.
What you're seeing here is a bottomless or "naked" portafilter (the tool which holds the coffee grounds) versus a traditional model with spouts. The bottomless PF is a great debugging tool for making espresso because you can gauge the quality of your grind, distribution and tamping by watching the brewing process.
When things go right, "pulling a shot" can be a beautiful and somewhat mesmerizing thing to watch. While practically impossible to perfect, the extraction in this video turned out pretty well in regards to the visuals.
Grouphead Flushing
Before extraction, it's recommended to "flush" the grouphead by running water through it. This brings its temperature down toward the target (roughly 200° F, in this case.) Additionally, the water pre-heats the cup.
There should be a minimal delay between flushing and extraction, since the grouphead temperature will quickly rise again if the boiler (heater) is on. I was relatively slow here, as I shot this video a few months ago. These days, I'm faster and there is much less idle time.
Brewing / Extraction
During extraction, it's good to see a deep reddish color, striations or "tiger striping" from the coffee coming out of the portafilter. It shouldn't be glacial, nor gushing in terms of "flow rate" - extremes on either end are undesirable.
Brewing should typically be stopped between 25-30 seconds, or when "blonding" occurs. There are also targets for ratios of extraction, i.e., 20 grams of espresso in 30 seconds and so forth.
I watch extraction runtime, but don't weigh the results to determine extraction ratios etc. Some roasters provide recommended parameters for their beans; e.g., 18.5 grams, with an extraction time of 28 seconds at 200° F.
In this case you're seeing Roastco "Oscuro Nuevo" espresso roast beans, perhaps 19 grams, being used in a 20g VST basket.
Results, Observations and Miscellany
There's a memorable 15:15:15 rule about espresso that I've heard.
• Coffee used within 15 days of roasting
• Grounds used within 15 minutes of grinding
• Espresso tasted within 15 seconds of extraction
In regards to appearance, good espresso should have deep color with some mottling, minimal bubbles and a solid layer of crema (an emulsification of oils from the beans) on the top; good crema should maintain its structure for around two minutes. If you're using a glass cup, you can also observe the layers as they swirl and settle within the glass.
In regards to taste, good espresso should be almost sweet, typically with hints of chocolate, butterscotch and whatever other colourful language roasters like to use to describe their products. What I look for is a natural sweetness, light acidity and ultimately an absence of excessive bitterness (water temperature too high) or sourness (too low). A one-second difference in extraction time can also have a notable effect on your results, in terms of balance and strength of taste.
I've heard people recommend consuming a shot in three sips, to enjoy the separate layers. Crema is unique in that it's a concentrated mix of the oils in the beans, and can be fairly different than the underlying coffee.
A fresh roast is critical to quality. From my experience, the consistency and quality of extraction goes downhill toward the two week mark. Then again, the last beans from my grinder always seem to produce fairly-runny extractions; perhaps there's something to the weight applied by the beans stacked above during grinding. At present, I go through an 8-oz bag of beans in about a week.
This is effectively what I've learned thus far about making espresso. I get pretty consistent results, and ideally, espresso that is quite tasty. I don't plan on opening a coffee shop any time soon, but I'd like to think I can make something close to my professional neighbours in terms of taste. I think I still make stuff that's a bit on the acidic / bitter side, but I'm working on it.
To close, quoting former comedian Dennis Miller, "'Course that's just my opinion, I could be wrong."
© Jim Gilbert 2015 all rights reserved
Interesting that the Oriole clearly knew what a rolled up leaf means. The approach on this end didn't work, but he didn't give up.
New Jersey Audubon Scherman Hoffman sanctuary, Bernardsville, NJ
Day: 044/365
Hit n Run's feet barely even seem to touch the ground as he races toward the Blackhawk with Cobra troops hot on his heels.
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The catalog styled stuff is cool but I've been dying to do a story-shot lately! That's really were my passions lye.
MOC WARS 2020! Clunkers! Fellowship Of The Brick!
A small utility ship sent into "uncharted" asteroid fields to measure their richness in valuable minerals, prior to company acquisition.
A dangerous job for the pilot, given the lack of basic safety features, and the constant threat of inhospitable "natives". Fortunately, the company fitted a gatling gun on the rear of the ship, so the pilot can protect the valuable cargo from pursuers, even if they have to climb to the back of their moving ship to use it.
Demonstration of extendable drill.
Araucaria Angustifolia extraction for wood. "Lumber" Company. Late 1920's, Itararé, São Paulo, Brazil. My grandpa, Frederico Holtz, is the last one, standing, left on the picture.
Literally... Brushing everyday will help keep the dentist away.
ps: To replace blood i used the one and only Heinz Ketchup (Yummy) :)
Explored: Best Position= 182
On my freeway commute this morning, I spied a young couple and their dog--hitching from beside the fast lane where i-84 eastbound splits from I-5. They were huddled on the narrow shoulder, with the roadside debris of car parts and broken glass--looking mighty small. Nothing but 8 lanes of fast freeway traffic in all directions. What a terrible place to be marooned!
I was on the I-5 route, so there was no way for me to get them. They were on a curve, too--a driver had only seconds to adjust, let alone decide if they wanted two hitchers with their backpacks and dog. Well, not my problem--I'm already past.
Nope. Can't do it. I pull into downtown, make a U-turn through the Portland State campus, and head back south on i-5--maybe someone's already picked them up (although "rescued" is the word I'm thinking now.
Southbound, I see that they are still there, looking more pathetic than before. I marked their spot with a landmark--Portland's big aerial tram will be hard to miss, and they're right by it. I drive 5 miles south to get to the next turnoff and then 5 miles back to "extract" them. My dogs seem confused by all these changes of direction.
A half-mile before the tram, I begin slowing and put on my hazard lights. There's not much shoulder here--and these crazy city drivers want to go 100 miles an hour! Particularly the big truckers--Hey! Old Man Driving--Back off MFers--!!
Yep, I pull over in front of my vagabonds (so the back of my truck will be the first thing hit, if things go poorly. The pretty young redhead with the rings through her nose and lips wants to know where I'm going (does it matter!?!?)--yes, north to Hayden Island will be nice. My little truck shudders with each 18-wheeler that streaks by--"yeh, hop in back." I say, and they do. Taking off from the shoulder into the 70 mph traffic (posted limit 55), on the uphill grade onto the Marquam bridge is a challenge and the right lane people are not feeling charitable, but we make it. Extraction complete, rescue accomplished--I feel great.
I'm always sympathetic to folks "flying the cardboard" on the onramps. People make choices, sometimes mistakes, but I'll hand over an apple, bottled water, deposit cans, sometimes even spare change.
But when the cardboard fliers have a dog with them--now I AM soft-hearted. The dogs seem to look at me, my dogs, and implore, "hey, I can't help it, being stuck with idiots! Gimme a break, please?"
Their dog looks like a sweetie. Smart. And grateful. She plants a kiss on the lips of the red-haired gypsy girl. The adventure continues. Whoever You Are
Daniel Kanter, a chief in a Ghanian village, worked with the IDDS group to create a device to extract the shea butter.
After a little bit of stalemate, M659VRR was finally extracted from its cess pit a few weeks ago in Bradford. The bus was a sorry tale of a failed non pcv project and had languished for many years falling into disrepair. Within only a few days of a deal being done it was out and on the back of the wrecker. This one will not live on.
The Cemex Gravel Works at Attenborough, a storm was approaching from the rear of the works and the foreground was in full sun which made everything look great, so stopped to grab a quick photo before the heavens opened.
Two simple extractions and you can get from the centre of Preston all the way to Todd Lane and Bamber Bridge without even seeing a blasted personal chariot ...
Just open that bloody gate !!! nb, this USED to be a railway !!!
CANOGA PARK- The Los Angeles Fire Department battled a Major Emergency Structure Fire in the west San Fernando Valley on Monday, October 18, 2021.
The fire at 8423 Canoga Avenue in Canoga Park, was first noted at 12:18 PM by an LAFD Paramedic Ambulance crew returning from a nearby emergency. Within moments of their reporting the fire, flames were through the roof of the 125' x 125' one-story industrial building that also housed an adjoining but unrelated business at 8425 Canoga Avenue.
As that first-arriving LAFD Paramedic crew circled the structure to gain situational awareness and guide fellow responders, they encountered the first of three adult male civilians with severe burn injuries outside the burning building. Two proved to be in critical condition and the other in serious condition. All three were taken to area hospitals. Sadly, one of the critically injured men died later while undergoing hospital care.
The rapid spread of intense flames and multiple explosions heard within the building guided first-arriving firefighters to quickly commence defensive operations, applying multiple large diameter hose streams from the exterior, including two from atop extended aerial ladders, to prevent flames from extending beyond the well involved structure.
With the exception of a forty square-foot section of the roof at 8427 Canoga Avenue destroyed by surface fire, the tactics proved successful in holding the blaze to the pair of unrelated businesses under one roof at 8423 and 8425 Canoga Avenue.
It took 150 Los Angeles Firefighter just 75 minutes to extinguish the flames.
Firefighters remained active through the night extinguishing hotspots and minimizing hazards at the structurally compromised building with the help of LAFD's robotic firefighting vehicle and heavy equipment.
At daylight Tuesday, LAFD crews resumed a systematic search within the largely destroyed premises. During their methodical search among tons of burnt debris inside the structure, firefighters discovered the remains of an adult male, bringing the overall patient count to four, with a total of two deceased and two remaining hospitalized.
No other injuries were reported.
Scientific testing of materials inside the building of fire origin yielded positive results for hemp, and it appears that the operation inside involved the extraction from hemp, not dissimilar to that used in the Butane Honey Oil extraction process.
Though the business was a legal enterprise, the operation inside appeared to be illegal, as it did not adhere to established permitting processes and safety requirements.
Pursuant to protocol, the fire's cause remains the focus of a joint active investigation by the Los Angeles Fire Department, Los Angeles Police Department and the Los Angeles Interagency Metropolitan Police Apprehension Crime Task Force (L.A. Impact).
A positive identification of the dead men, as well as the cause, time and manner of their death will be determined by the Los Angeles County Department of Medical Examiner-Coroner.
© Photo by Mike Meadows
LAFD Incident 101821-0791
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Blue Bottle "Hayes Valley" Espresso roast. This extraction ran a little long at close to 35 seconds, but I think the result turned out pretty well.
Everything the oracle told me has come true... everything but this...
:) For 365 and Take a Class with Dave & Dave's Matrix assignment.
This one hit explore at #144. Will wonders never cease?