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How to Roast Coffee Beans?

Published in Coffee Roasting 2 mins read

Roasting coffee beans at home can be achieved by using your oven; here's how:

Oven Roasting Coffee Beans: A Step-by-Step Guide

Roasting coffee beans in your oven is a straightforward process, though it requires some monitoring. Here’s how to do it:

Preparation

  • Gather your materials: You will need raw green coffee beans, a baking tray, and baking paper.
  • Preheat the oven: Turn your convection oven on to a hot temperature.

The Roasting Process

  1. Arrange the beans: Line the baking tray with baking paper. Then, spread the raw coffee beans on the tray in a single layer, making sure they are next to each other and not stacked on top of one another.
  2. Place in oven: Put the tray with the beans into the preheated oven.
  3. Monitor the beans: During the roasting, you need to open the oven from time to time and turn the beans to ensure an even roast.
  4. Listen for the cracks: You will hear the beans crack twice during roasting.
    • First Crack: After about 5 to 10 minutes, the beans will crack the first time.
    • Second Crack: After about 20 minutes the beans will crack a second time.
  5. Remove from the oven: Once the beans have reached the desired roast level, take the tray out of the oven. This will depend on personal preference.

Table Summary of Roasting

Step Description Time
Prepare Lay beans on the baking tray lined with paper 1 minute
First Crack Beans crack for the first time 5-10 min
Second Crack Beans crack for the second time About 20 min
Remove from Oven Remove when beans reach desired roast Varies

Additional Tips

  • It's important to pay close attention to the beans as they roast. The color will change as they progress from green to light brown and then dark brown.
  • Always ensure the beans are in a single layer on the baking sheet so they roast evenly.
  • The time it takes to roast beans can vary slightly based on your oven and the type of bean.