Questions tagged [filter]

A device used to strain or separate grounds from coffee while brewing

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24
votes
1answer
18k views

How do brown and white paper filters compare?

Besides the obvious colour difference: Is there any significant difference between using a brown ("natural") paper filter, and a white (bleached or otherwise whitened) paper filter? That is: when all ...
22
votes
10answers
55k views

Is it safe to use paper towel as a filter when brewing?

Are there any chemicals or dyes in most common paper towels that would be harmful if I brewed my coffee using the towel as a filter? If it is safe, will it affect the taste of the coffee at all?
17
votes
3answers
8k views

Why do we need to fold the border of filters?

Standard and V60 paper filters require we fold the border before spreading them for dripping. I believe this is just because of their manufacturing process. But would there be any other reason? ...
13
votes
6answers
7k views

How can I make filtering my cold brew easier?

I use the "plunging" method of cold brew, and filtering the grounds out of the brew --I use a coffee filter in a funnel-- is very time-consuming (although thankfully it doesn't take me the "hours" ...
13
votes
4answers
5k views

How often do I need to change the filter on a siphon?

Many siphons use a small piece of metal wrapped into a fine cloth. The piece of metal makes them robust, and it seems to me they can be used for a long time. The piece of cloth is usually of enough ...
12
votes
4answers
5k views

What's The Difference Between Paper and Long-Lasting Filters

Lots of people use lots of filters for drip- or filter-brewed coffee. Some use paper and others use these durable filters. The performance to me is the same but many people argue that. They do have ...
9
votes
2answers
1k views

Why does the filtrate sometimes well up in the upper cone when using the Chemex coffeemaker

When using the glass-handled 6-cup Chemex like this one: and the appropriate Chemex conical paper filter, the filtrate (liquid that has passed through the coffee and the filter) sometimes wells up ...
7
votes
5answers
29k views

How do I effectively clean a metal Chemex filter?

I've been using a metal cone filter for a couple months: Able Brewing Kone Coffee Filter It has worked fantastically, but gradually clogged up over time. I've washed it with warm water and dish soap ...
7
votes
5answers
3k views

Large scale cold brewing - Mesh bag technique - What size mesh is best?

I'm looking to upscale our production of cold brew to batches with a 1000L yield, using a ratio of 1:12.5 to make a ready-to-drink coffee for bottling. Currently we run batches of ~40L through a large ...
6
votes
3answers
422 views

Reusing paper filter by placing metallic net filter in it

First, what I do; then, the question. I tend to brew coffee one cup at a time. To avoid waste, I only brew as much as I need, so I usually drink it all. In order to further reduce waste, I have ...
6
votes
3answers
5k views

How can I make my coffee taste stronger using a french press or gold filter?

I like drinking my own coffee at work, as it's cheaper and more convienient than buying espresso. However, recently I've been finding myself wanting a more long-black like espresso coffee. How can I ...
6
votes
2answers
1k views

How does using coffee filter make the coffee different?

Somewhere I read that coffee contains carcinogens unless it's filtered, and I think I've noticed that such filtered coffee seems to be weaker. I let it stay for about 5-10min, and it still tastes ...
6
votes
1answer
2k views

Certain Types of Coffee Machines Use Certain Filters?

I was on this website which states that there are four main types of coffee makers: Drip Coffee Espresso French Press Single Cup I'm wondering that they might have to use different types of filters. ...
6
votes
0answers
134 views

Empirical data on reuse of grounds, by flow and filter

We wanted to know are there quality empirically generated chemical composition tables examining the relationship between filter porosity, flow by volume per time, and grounds of different varieties?
4
votes
1answer
245 views

How to maintain the flow rate of Hario Woodneck cloth filters as they age?

The Hario Woodneck brewer uses cloth filters that are not meant to last forever but I am looking to increase their usable age. As weeks pass, the flow rate of water through the filter noticeably slows ...
3
votes
3answers
361 views

French-press v.s. manual pour over brewing quality

Does anyone happen to know the differences in brewing quality of using a french press v.s. using a manual pour over? I can imagine using filter paper might give a better quality brew with a manual ...
3
votes
3answers
3k views

Does instant coffee give a lesser buzz/high than conventional filter/french press coffee?

I have felt that percolated/french pressed coffee keeps me awake more than instant coffee brew. EDIT: Since it was (validly) pointed out it will depend on the amount, so the amount, that I am ...
3
votes
1answer
83 views

What measurement should I take to buy an atmospheric filter for my espresso machine?

I want to buy an atmospheric filter for my espresso machine, but I don't know what part of the filter I should measure. Should I be measuring the radius from the internal part of the border of the ...
3
votes
1answer
78 views

Water Filtration for Cold Brew Vending

I am going to begin vending cold brew at parties/pop-up events with the Toddy process, what are good methods to assure that I have optimal water quality with as little overhead as possible? I will ...
3
votes
0answers
47 views

Requirements for Nel Drip Coffee

I have a question about Nel Drip coffee requirements. Recently I've been checking few blogs and articles about this type of brewing, it mostly leads to these "settings": - Old coffee beans - Coarse ...
3
votes
2answers
188 views

Tea vs. coffee paper filters: are they interchangeable?

I consider using paper bags for tea as a substitute for paper coffee filters and I wonder: do they filter out as much solid material as coffee filters? The matter of fact is that not all paper filters ...
2
votes
2answers
64 views

Do reusable hemp filters filter out cafestol?

Do reusable hemp filters filter out cafestol oils which raise bad cholesterol levels? I know paper filters do and that is what we use now. We are concerned with cholesterol.
2
votes
2answers
341 views

What is the most environmentally friendly type of coffee filter?

First I want to clarify I live in a city that does compost (Seattle). Also taste is not a concern for the sake of this discussion. Knowing that... I am not sure what is a more environmentally ...
2
votes
1answer
356 views

Is it Okay to Reuse One-time Coffee Filter Cups for Coffee Pods?

I have a bag of 10 Rombouts filter coffee cups and I wonder if these can be reused: I wanted to reuse them but have concern from health perspective as well as practicality of this. Since coffee in a ...
2
votes
2answers
105 views

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 ...
1
vote
3answers
651 views

It is possible to completely dissolve coffee grounds while cleaning a metal filter?

After months of use, the metal filter used in my French press coffeemaker now has small traces of coffee grounds stuck between the mesh fibers which cannot be removed by brushing either side. Seeing ...
1
vote
2answers
215 views

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 ...
1
vote
1answer
32 views

My coffee pot is a 12 cup Cooks.It has a built in filter yet i still feel the need to put a regular filter in it as well.Am i just being foolish?

Cook 12 Cup Pot Self filtration installed Use of regular filters as well
1
vote
1answer
180 views

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, ...
0
votes
2answers
339 views

Fix my Breville coffee machine filter holder

Ok, so basically 6 years ago I bought a Breville Venezia espresso coffee maker. I am really happy with the machine, as it still works after 6 years of relatively frequent use. But recently out of the ...
0
votes
1answer
206 views

French press vs simple filter, is French press equipment really necessary?

French press coffee is basically when you pour almost boiling water onto ground beans and then filter them (by pressing the filter handle). So I wonder why use that contraption at all? Simply pour ...
0
votes
1answer
40 views

Any idea on auto clean coffee filter mechanism?

Do you have any idea on how to design a filter for fine substances left over after the brewing process (e.g. ground coffee or tea) without human intervention? This filter will be used in a vending ...
-3
votes
1answer
289 views

Filter coffee machine vs boiling on the stove

I just saw you can buy a coffee machine that uses a rather simple filter method to brew coffee. Exhibit A I wondered what is the difference between that machine and brewing coffee in a pot on the ...