Knowledge Centre

Espresso that drips slowly or stalls almost always comes down to grind size, dose, tamping pressure, machine maintenance or very fresh beans. Here is how to diagnose and fix a slow-pouring shot, step by step.

A troubleshooting guide to fast-pouring espresso, covering the most common causes including grind size, dose, channelling and bean freshness, plus a step-by-step fix and how to prevent it happening again.

A complete guide to espresso extraction, explaining dose, yield and time, brew ratio, under- versus over-extraction, ristretto, normale and lungo recipe styles, and how pressure and water temperature fit into the process.

A complete guide to coffee grind size for every brewing method, covering the full grind spectrum, what happens when grind size is wrong, burr vs blade grinders and common grind size mistakes.

A step-by-step guide to dialling in a coffee grinder for espresso, covering dose, grind size, timing, reading a fast or slow pour, puck preparation and how bean freshness affects the process.

A troubleshooting guide to sour coffee, covering the most common causes including grind size, water temperature, ratio, brew time, fresh beans and pour-over channelling, plus how to fix each one.

A troubleshooting guide to bitter coffee, covering the most common causes including grind size, water temperature, ratio, brew time, stale beans and dirty equipment, plus how to fix each one.

A direct comparison of Peruvian and Guatemalan coffee, covering growing conditions, organic sourcing, flavour differences, and which origin suits milk-based drinks, filter brewing and everyday use best, plus Amici's own Peruvian and Guatemalan single origins side by side.

A direct comparison of Brazilian and Colombian coffee, covering growing conditions, processing methods, flavour differences, and which origin suits milk-based drinks, filter brewing and everyday use best, plus Amici's own House Roast and Colombian Single Origin side by side.