Unanswered Questions

79 questions with no upvoted or accepted answers
18
votes
0answers
1k views

Research funding for health benefits by coffee trade associations

How much funding is provided by the coffee industry for research on the health benefits of coffee? I came across a statistic that surprised me by its meagerness. According to their website, the ...
6
votes
0answers
130 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?
5
votes
0answers
83 views

Slow Roasting Coffee Beans

Conventional Coffee bean roasts at around 200-240C at around 11-19mins to ensure Maillard reaction in the beans to create the familiar taste of coffee we all know today. Could we instead roast the ...
5
votes
1answer
65 views

Does hydration level change the effect of caffeine?

Apologies if this question does not belong here, it may be suit for the chemistry site, but it pertains to the consumption of coffee directly -> so here it is. Does your prior level of hydration ...
4
votes
0answers
30 views

Does anyone know the history of the “washed process?”

Where did the washed process originate and how has it developed and progressed? And what are the different forms and variations it has taken over the years? I have a hunch that it began in Ethiopia ...
4
votes
0answers
86 views

How can I test or repair my Keurig k45 heating component?

My k-cup coffee maker has stopped making coffee. It's a Keurig K45. It will take water, activate the pump, then it will just stay on the step with the red heating light on. I've let it sit for 15 ...
3
votes
1answer
119 views

Caffeine content of different brewing methods

For a given type of bean, do different brewing processes and temperatures (drip, French press, Mocha, espresso, cold brew, etc.) produce coffee with different caffeine content? It would seem ...
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
0answers
691 views

Messy grounds inside of DeLonghi ESAM 2600

I've got a DeLonghi bean-to-cup machine (ESAM 2600), which I find decent in overall. But there is one very annoying issue: not all of the grounds make it from the basket into the internal waste bin. ...
3
votes
0answers
103 views

What steam wand to replace my Gaggia Carezza old machine?

I have an old model of Gaggie Carezza that can be found here. The steam wand needs to be replaced. Does anyone know which one is suitable? I have been looking at this Rancilio Silvia steam wand but ...
3
votes
1answer
78 views

Least Expensive Way to Make Decent Espresso-based Milk Drinks?

I want to know the cheapest machines to make decent espresso for my situation. Needs: I need steam for milk drinks I need the proper brewing pressure I need to use fresh ground coffee, no pods ...
2
votes
0answers
61 views

Does L-theanine affect caffeine's half-life?

Does consuming L-theanine with caffeine, either in drink (like matcha) or in pill form, affect the half-life of caffeine? I have heard something like "L-theanine slows caffeine absorption", ...
2
votes
0answers
36 views

Couple Brikka and Moka

I have induction stove and want to use Brikka on it, but as far as I know: Brikka is always Alu there are versions of Moka from stainless steel I want to couple them together: take bottom part from ...
2
votes
0answers
25 views

Frothing issues in coffee machines

I have an expresso machine of Morphy Richards, which I have been using for quite some time. The problem which I encounter is that the froth formed from its nozzle doesn’t stay for long, like it stays ...
2
votes
0answers
21 views

Water tank and Spout

I am trying to use a coffee machine water tank for a different project. The problem is, I am unable to find a water spout for the tank because of which I cannot pump the water out of it. How does ...

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