What do coffee beans and chicken nuggets have in common? They can both be put in the oven. Today we’re going to be making use of our freezer isle skills to roast coffee. This guide is perfect for those with a low budget or just want to try something new.
WHAT YOU’LL NEED
Thin baking sheet – Make sure your beans don’t overlap
150 g (5.3 ounces / about 1 cup) green coffee beans
Before Getting Started
Roasting coffee beans in the oven can produce smoke. Before getting started turn on the oven fan. Open your windows. I would even suggest disabling your smoke alarm (Turn it back on when you’re done).
It helps to have a roast color in mind. Pour your ideal coffee beans into a bowl – use them as a color reference.
Let’s get Roasting
Preheat your oven to 500°F(260°c). Now grab the Food scale and weigh out 150 grams of coffee beans. Pour the beans onto your baking sheet. Make sure they’re spread evenly and kept away from the edges of the pan. Any bean touching the edge of the pan will overcook.
Put the pan in the oven. Close the door. Set your timer for 4 minutes and Start. As much as you want to, DO NOT OPEN your oven for at least 4 minutes. This will let out heat and cause the beans to roast unevenly. Once your 4 minutes are up open the oven and inspect the beans. At this point, they should be a light yellow. Take a spatula and very carefully mix up the beans. Focusing on moving the beans around the edge to the inside. At or around 5 minutes the coffee beans will start to turn light brown.
Mix up the beans if the outside is darker than the inside. You should hear the first crack between 7 and 8 minutes. It will sound similar to popcorn popping. After the crack mix up the beans. Soon you will hear fast popping. This means your coffee is severely changing. At this point, I wait 20 seconds before pulling the pan out of the oven. This will likely be different for you depending on the level of roast you want.
Pull the pan out of the oven before you think it is done. The coffee will continue to cook and darken in the pan. Wait until the coffee is completely cool. This generally takes 30 minutes. Congratulations, your coffee is ready to be brewed. With practice, you should be able to get your ideal level of roast.
Here is a breakdown of the Roasting Process
2 Minutes – The beans will turn light green
4 Minutes – Mix up the beans once they turn light yellow
5 Minutes – Mix up the beans once they turn light brown
7 Minutes – You should hear the first crack (Popcorn Popping)
20 Seconds after the first crack – Mix up the pan
45 Seconds after the first crack – Beans will start to quickly crack
For a more lengthy guide on How to Roast Coffee at Home check out: The Blue Bottle Craft of Coffee Book.
This is a great read and gives an in-depth description of the roasting process.
Leave a comment below to tell us about your at home coffee roasting experience.