In this post, I discuss how I pull espresso shots with the EG-1 grinder and SSP’s ultra-low-fines burrs. These shots have a high average extraction yield, high clarity and low mouthfeel.
Author Archives: jgagneastro
How a Paper Filter Below an Espresso Puck Affects Hydraulic Resistance
In one of my latest posts, I investigated the effect of puck preparation, and in particular the addition of a dry paper filter above the espresso puck, affects the hydraulic resistance of the system during an espresso shot. While I have not yet tested its effect on average extraction yield, I did not see anContinueContinue reading “How a Paper Filter Below an Espresso Puck Affects Hydraulic Resistance”
The Four Rules of Optimal Coffee Percolation
In this post, I lay down four rules for optimal percolation that follow some of my most recent understanding about percolation physics.
A Study of Espresso Puck Resistance and How Puck Preparation Affects it
In this post, I present an experiment showing that deep WDT helps improve repeatability, and I discuss how to improve espresso preinfusion.
An Espresso Profile that Adapts to your Grind Size
In this blog post, I explore the possibility of a different way to profile espresso shots with the Decent machine to help dialing in faster.
Brewing with the Fellow Stagg [X] Dripper
In this post, I review why I completely switched from the V60 to the Stagg [X] brewer, and how I now use it.
The Effects of Varieties, Origin and Processing
In this post I discuss the effects of coffee varieties, origin and processing on average extraction yield and brew time.
The Physics of Kettle Streams
In this post, I discuss the physics of kettle stream and how we can maximize extraction evenness by changing pour rate and height.
Why Can’t we Grind Coffee Finer for Pour Over ?
In this post, I discuss issues and possible avenues for grinding finer for filter coffee
Measuring Brew Water Properties
This post describes some available tools for measuring water properties relevant to coffee and presents ways and a web tool to hack aquarium kits for a better precision.
Coffee ad Astra 