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Jonathan Gagné – The Physics of Filter Coffee

45,00 €

New edition of one of the most influential books on filter coffee brewing. Jonathan Gagné connects physics and coffee in a way that reshaped how extraction is understood. Demanding, but structured with clarity and precision.

The astrophysicist guides you through the key processes behind brewing. From percolation and extraction to grind size and water chemistry, he explains how each variable shapes the final cup. Small details like pouring technique, filter paper, and particle distribution play a critical role.

Clear graphics and data make complex ideas easier to follow. The book goes beyond theory and gives practical approaches you can apply right away. If you engage with the details, you gain control over every brewing decision.

For anyone who wants to understand filter coffee at a deeper level, this is a modern standard. For professionals and ambitious home brewers, it is hard to ignore.

Language: English

In stock

including 7 % VAT, excluding shipping costs

PASSENGER is roasting on four days a week and ships fresh coffee within three days after an order is placed.

The coffees are suitable for all types of preparation, depending on personal taste.

The single-origin roasts emphasize fruity, floral and herbal notes, while the espresso blends usually complement the actual character of the coffee with sweet roasted aromas and a creamy body and are both intriguing and accessible.

We are continuously intensifying our cooperation with innovative and progressive green coffee traders and social organizations that are committed to making the trade in green coffee fairer along the entire value chain.

FAQ

Which coffees are best suited for preparation in a moka pot?

We recommend the espresso blends PASSENGER Blend, blend 2 and RAWS for a strong, sweet mocha.

By comparison, when single origins are brewed in a moka pot the resulting coffee has greater acidity with fruitier notes and develops less body.

What are your priorities when it comes to buying green coffee?

We are committed to fair trade and work with a growing network of distributors who specialise in green coffee, local sourcing crews and agronomists, as well as a growing number of directly affiliated farmers. We constantly strive for higher sustainability standards in the production process and act responsibly throughout the entire coffee value chain. 

How is PASSENGER Decaf decaffeinated?

The PASSENGER Decaf is decaffeinated by a highly regarded Columbian company called Descafecol.

Descafecol uses the sugar-cane process, This involves pure water from Navado el Ruis (a snow-capped volcano on the border between the departments of Caldas and Tolima) and natural ethyl acetate from Palmira, which is obtained through the fermentation of sugarcane. The coffee beans are placed in a solution of water and ethyl acetate and the solution acts as a binding agent for the caffeine.

This gentle method of decaffeination does not require excessive heat or pressure, which allows the beans to retain their natural structure and characteristics.

What’s the shelf life of a bag of coffee?

The best-before date on the packaging is 12 months after the roasting date. Our coffee should ideally be consumed within four weeks of roasting. Depending on the preparation method, the first noticeable changes in taste will become apparent after that time. We recommend storing the coffee in a sealed container at room temperature to keep it fresh.

Why can’t I pay for Cubano via PayPal or Stripe or add it to a subscription?

PayPal and Stripe are not allowed to enter into trade relations with Cuba due to the US trade embargo against Cuba, which has been in place since 1960.

That’s why it is not possible to purchase Cuban goods using these American payment systems. Our subscription function is linked to PayPal and Stripe, so unfortunately we cannot offer Cubano as a subscription.

A Universe Of Coffee…