Pocket Science Coffee

Pocket Science Coffee

Amateur sciencey coffee talk

  • January 7, 2025

    Life with Timemore 064s (and an unauthorized alignment guide)

    Life with Timemore 064s (and an unauthorized alignment guide)

    This post is intended for folks intending to use aftermarket burrs in an 064s. If you’re happy with the taste results of stock burrs or are intending to purchase an 064s and never intend to swap burrs, this post isn’t for you, and I’d recommend not reading beyond this point. It’s truly a great grinder…

  • December 3, 2024

    The Problem With Ultralight Roasts (and other myths)

    The Problem With Ultralight Roasts (and other myths)

    Despite its primary purpose (as seen by the consuming world) as the cheapest available drug, coffee consumers have strong opinions on how it should taste. Specialty coffee especially prides itself on showcasing how different coffee can taste like, well, not coffee. A change in style About decade and a half-ago, a certain spice grinder began…

  • February 27, 2024

    Espresso Water Flow Part 1: Dispersion, Puck Screens and Baskets

    Espresso Water Flow Part 1: Dispersion, Puck Screens and Baskets

    Truth be told, this post was going to be split into three parts, one each for the namesake accessories in the title. But before I went about making plots, I reached out to Jonathan Gagné to check if I could trouble him to take a look at my data and find any shortcomings with it.…

  • January 7, 2024

    Espresso water flow Part 0: Workflow

    Espresso water flow Part 0: Workflow

    Skepticism is a weird deal. Too much can stunt innovation and too little can, well, lead to too many pocket theories. Lance Hedrick is among the few who seems to take a balanced approach based on both data and experience. So when I claimed in my debut post that Decent’s new dispersion block design was…

  • October 29, 2023

    The most underrated dripper (and a busy dad’s recipe)

    The most underrated dripper (and a busy dad’s recipe)

    There’s so much hype about percolation drippers that it’s almost uncool to say that you like immersion. While recent steep-and-release brewers have changed the dynamics to some extent, I still think there are aspects of extraction in immersion we often overlook – a grave dug by the concept of immersion itself. A rather clever idea…

  • October 1, 2023

    How to brew with Pulsar (coming from V60)

    How to brew with Pulsar (coming from V60)

    It’s been a while since I’ve been excited about a new brewer. I try my best not to be in upgrade mode. Indeed the V60 I love and adore is almost 4 years old and so is my kettle. If anything, after having dealt with the tricolate I have been even more wary of brewers…

  • September 10, 2023

    Making filter coffee with an espresso machine

    Making filter coffee with an espresso machine

    This isn’t filter2.0 or filter3.0, but rather an approach to make actual filter coffee with sufficient yield at coarse grind settings in a regular size espresso basket. With that out of the way, let’s explore why it may have taken so long to achieve this. 9 bar or bust When most people think of espresso,…

  • June 18, 2023

    Cheapest way to make high-clarity coffee

    Cheapest way to make high-clarity coffee

    In this post I talk about the cheapest setup combined with a recipe one needs to make high-yielding delicious coffee consistently (excluding grinder). Since we’re compromising on equipment, we’ll be compensating with lots of nerdery, most of which is based on the application of concepts in The Physics of Filter Coffee by Jonathan Gagné. Things…

  • March 23, 2023

    Superjolly bearing replacement Part 2: Alignment

    Superjolly bearing replacement Part 2: Alignment

    Note: This post is intended to serve as a somewhat generic reference for different ways to both fix and check alignment on flat burr grinders, but may not apply to all grinder designs. If my Frankenjolly were just a filter grinder, this story would probably have ended at Part 1. But I got Franken first…

  • January 2, 2023

    Superjolly bearing replacement Part 1: The Bearing

    Superjolly bearing replacement Part 1: The Bearing

    A Mazzer Superjolly is infamous for being built like a tank. After ages of use in a cafe, however, and having been through the hands of at least two people before it came in my possession, it’s reasonable to assume that some mobile parts of my Frankenjolly will need replacement. One fine day When you…

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