Questions tagged [extraction]
The extraction tag has no usage guidance.
45 questions
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Pour over for single cup brew not extracting caffeine?
So I kind of do a pour over method but I do the following steps:
boil the water
put 4 to 5 tsp (20-25 grams) of medium grounds in 6 to 7 fluid ounces of water or 177 mL to 207 mL (grams) of water
...
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How much does a metal filter affect extraction time?
I'm investigating reusable metal filters for drip coffee makers or pour-over, and the information online seems counter-intuitive.
Online discussion about the difference always describes how the metal ...
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How much caffeine is extracted from roasted ground coffee beans?
What is the percentage of caffeine extraction when brewing coffee? In other words, how much of the caffeine in ground coffee dissolves in hot water? Is it correct that the degree of extraction is ...
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Gaggia Classic crema is a bit "bubbly"
I've got a Gaggia Classic (this particular model) that I've been doing some light mods to (changed 12 bar spring for a 9 bar, lower drip tray and so on). Anyway, lately I've noticed that the crema ...
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What is the minimum amount of coffee that produces the maximum possible concentration?
There are several posts about "good" ratios of coffee and water, but the answers are somewhat subjective.
I'm not asking about "good", or "best", or ideal acidity or ...
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Does this dialog from a TV show describe an actual procedure during coffee making?
This is from one of the episodes of Conan O'Brien's show. In this video he takes one of his staff members to a coffee roasting house. There is a short technobabble at one point in the video:
https://...
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What happens when you brew coffee for a long time and/or on a high temperature (above 100°C)?
Does anybody know, what happens, when you brew coffee for a long time and/or on a high temperature (above 100°C). I found only this:
Temperature affects the solubility and volatility of the coffee ...
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Espresso: How much can coffee choice affect the porosity of the coffee puck?
So this has happened to me: I bought a pack of pretty well-looking coffee, using the same approach as for other coffee beans (even the ones from the same "brand") I prepared an espresso, and ...
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My coffee isn't acidic enough?
This question is difficult to google because of the overwhelming amount of people looking for less acidic coffee, but...
My (very cheap) 4-cup Cuisinart drip-style coffee maker (like the kind you'd ...
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Aeropress: at what stage does most of extraction happen?
While making coffee using the Aeropress, there are a number of stages that happen in sequence. For example,
Initial pour of small quantity of hot water
Stirring for about 10-20 seconds
Pouring of the ...
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Troubleshooting Moka coffee grind size vs sediments
I recently received as a gift a pack of pre-ground coffee that was supposed to be incredible, but I just can't get it to work. I'm still getting used to my Moka pot, so its normal that I don't get a ...
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How do I make a single shot of espresso with a semi-automatic machine?
I just bought this Barista express from Breville. How long is the extraction time for singe shot, 9 gramme coffee?
Also i did a double shot, setting is at 7 and grind amount in the middle... how do I ...
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What are the best single shot filter baskets
I'm using a Gaggia classic with the 58mm diameter portafilter that comes with it. I basically only drink single shots, but they are still difficult for me to get right. My grinder is a baratza encore, ...
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Can you make good, evenly extracted espresso with a single basket?
I have a Lelit espresso machine which came, like nearly all other machines, with multiple baskets. I got a double (up to 20g), a small double (up to 18g) and a single (up to 9g) basket.
The machine ...
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Is diluting filter concentrate after the brew the same as brewing with the additional water?
Recently moved from a Clever Drip coffee maker to an Aeropress. I brew using a 60g to 1 ltr ratio often brewing 24g yielding 400ml on the clever drip and 12g to 200ml on the Aeropress. If I am brewing ...
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What is the industrial method for extracting caffeine to make decaf? [duplicate]
Is this a solvent extraction method? If so what solvent is used and if it is organic, do the manufacturers verify elimination of a certain percentage of residual solvent?
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What does over-extracted taste like?
The recipe says to stir less if the coffee tastes over-extracted and to stir more if it tastes under-Extracted. Is this different from stonger and weaker? What does extraction taste like?
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Does an inconsistent roast affect espresso extraction? If so, how?
I'm not really asking about flavour, I understand that an inconsistent roast causes inconsistent flavour.
My question is how it affects the extraction itself. Does an uneven roast lead to an uneven ...
JJJ♦
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How much volume of the shot should pre-infusion take up?
The espresso machine I use at work has a pre-infusion step. I've been wondering if the volume of the pre-infusion affects the shot, especially the pressure of the main extraction.
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When dialing in a pour over, what factors indicate a change in water temperature might be necessary?
I’ve been experimenting with my v60, EK43, refractometer and variable temperature kettle. I understand somewhat how grind size, water-to-Coffee ratio, agitation etc. affect extraction, but I am ...
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Single shot extraction time in Breville Barista Express
I have got a Breville Barista Express just before a couple of days and I am trying to make the best single espresso shot I can make with this machine at home.
For the last two days I was playing and ...
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How to keep the time before coffee get out of the machine?
I just bought a Nuova Simonelli Musica + Eureka Mignon, so I'm practicing extracting a shot.
I am trying to make the extraction lasts 25 sec.
But when I start the extraction, I first have ...
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What is the best way to clean a refractometer?
I just purchased a refractometer and the manual mentioned cleaning it very often and very emphatically. So what is the best way to clean it? It is a VST inc Lab Coffee iii Digital Refractometer.
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How does one calculate extraction percent?
I am reading “Everything But Espresso” by Scott Rao and am in the chapter “The Coffee Brewing Control Chart”.
In the section “How to Calculate Extraction without a Chart”, he says you need three ...
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How could I improve extraction and yield more coffee when brewing with a filter?
By my estimate 1 pound of course ground coffee leaves about 900 grams of concentrate in the wet grounds after filtering.
In a perfect world with 100% extraction we could get about 54 cups of coffee ...
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Is there a composition available about how the main parameters influence coffee taste?
There's lots of information available about the influence of various parameters on coffee taste, but it's scattered across the internet. On top of that, most answers and articles are packed with ...
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What acids are there in coffee?
I don't know what acids extract with what temperature. For example, in 93 °C what acids hurt and what acids extract. I want to know for better flavor and less bitterness in my espresso, what can I do?
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Can you use sparkling water to brew coffee?
Has anyone ever tried it yet? What flavor/mouthfeel/extraction benefits are there, if any?
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Cold brewing at varying temperatures - How does steeping temperature affect extraction?
I've always cold brewed at ambient temperatures (typically in the 68-74F range). I've recently been speaking with people who say that they only cold brew at refrigerated temperatures, stating that it ...
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Options for measuring TDS - Suggested refractometers
I'm looking for some options for measuring TDS.
Everything seems to point back to the VST Refractometer, but at $700+ I'd like to try some other options first.
I founds a low cost TDS meter on ...
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Why does my moka pot sputter?
I have an old 6-cup moka pot (bialetti) that I recently replaced the filter and the rubber gasket (bialetti brand), however the extraction time seems a bit long, bubbles to soon(almost immediately) ...
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Optimal moka pot size for flavor extraction?
My hunch is the smaller the moka pot, the higher the pressure buildup, resulting in higher extraction. Is this true and are there any other variables that may negate this theory?
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Could light transmittance be used to timely determine extraction?
I was wondering if I could get perfect extraction timing by measuring the light transmittance (of course with the same coarseness of grind) like a Beer's law sort of thing. Anyone have any readings? ...
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How to reduce sourness in my moka-pot brew?
so most things I read say the common problem with a moka pot is a bitter, over-extracted brew, so I'm confused as to why I'm getting the opposite.
Here are the beans I'm using- http://www....
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Are there any Alternatives to using a Refractometer to determine extraction
Wondering if anyone has used a refractometer or knows of any other method to measure a coffee extraction (or dissolved solids)?
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How to make Turkish coffee in a syphon?
I've been experimenting with my Syphon to make turkish coffee, my thoughts on the matter are that using the syphon without a filter would allow the water to boil, move to the upper chamber, let the ...
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Espresso - Dose affecting extraction time disproportionately
I have a Pasquini Livia 90 and a Baratza Vario Ceramic grinder.
I'm finding that the only way to tame my extraction speed is by over dosing the basket. Specifically, by loading the basket so heavily ...
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Hario V60 Plastic Dripper vs Ceramic Dripper: Is there any difference in brew quality?
I am planning on purchasing a V60 and was wondering if there was any difference between the brew produced by the plastic and the ceramic Hario V60?
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Ideal Way to control shot extraction with Gaggia Classic
Wanted to know if anyone has a really good, possibly verified method of controlling shot preparation and extraction with an unmodified Gaggia Classic espresso machine. I don't have, nor do I want to ...
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Does using two paper filters in a drip machine strengthen flavour?
From time to time, I find myself somewhere, where I have to make coffee using a drip machine. Often it is one that takes flat-bottom, paper filters.
When I am in this situation, I am usually working ...
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Can caffeine be extracted by the body when digesting coffee grounds?
I'm told my great-grandmother used to drink the coffee, then eat the grounds with some sugar. Assuming there was caffeine left in them, is the body able to extract caffeine from coffee grounds by ...
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Why does some coffee "hit me" harder than other coffee? [closed]
I've had all types of coffee, but certain brands or preparations seem to get me more 'speeded up' (like Starbucks coffee) than others. What causes certain coffee to be more "stimulating" than other ...
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What do the terms extraction and strength mean?
A number of questions use the terms extraction and strength in a broad sense like "how much stuff comes out of the coffee beans."
But "technically" speaking: What do the terms extraction and strength ...
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How will "cold brewed" coffee differ from traditional hot-water extraction methods?
Generally speaking, what do "cold brewed" methods hope to achieve compared to the more traditional hot-water methods of extraction?
Does the amount of caffeine vary between hot brewed and cold ...
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When to use stirring to increase extraction?
I often find that some methods of brewing for a particular implement differ on whether or not to stir the grounds at some point in the process.
I understand that stirring while brewing should ...
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