I come back to my last experiment and explore whether the difference in gravimetric vs volumetric flow could be due to changing shot TDS.
Category Archives: Data Analysis
A Comparison between Standard and Low-Fines Espresso Shots
In this post, I compare several shots pulled with the Niche to others pulled with the EG-1 and SSP ultra-low-fines burrs.
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.
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.
Measuring Coffee Concentration with a 0.01% Precision
In this post I present an updated methodology to measure TDS with a 0.01% precision using a refractometer.
An Investigation of Kettle Temperature Stability
In this post I investigate the stability of my Brewista kettle with the Brewcoat insulation and an additional layer of aerogel.
An In-Depth Analysis of Coffee Filters
In this longer than usual post, I do a very detailed microscope analysis of various V60, chemex and siphon paper and cloth filters.
How Coffee Varietals and Processing Affect Taste
In this post, I used tasting notes from 1500 bags of coffee too bring out how perceived flavor is affected by coffee varietal and processing
