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5 from 2 votes

How to Roast Green Coffee Beans

Roasting your own coffee at home is not only a cost-saving venture but also a rewarding experience that ensures you enjoy the freshest coffee possible. This simple yet detailed guide will walk you through the process of transforming raw green coffee beans into aromatic, flavorful roasted beans right in your own backyard.
Using an air popcorn popper, you'll learn how to achieve your preferred roast level, whether it's a light City Roast or a deep, dark Full City. This method is perfect for coffee enthusiasts looking to elevate their coffee game while also gaining a deeper appreciation for the craft of coffee roasting.
Prep Time5 minutes
Cook Time15 minutes
Total Time20 minutes
Course: Drinks
Cuisine: World Wide
Servings: 0.5 cup
Cost: $1.50

Equipment

  • 1 air popcorn popper preferably an older model like West Bend Poppery or Poppery II that runs 1200-1500 watts
  • 2 two metal mesh colanders
  • 1 small bowl or another container to catch the chaff
  • 1 oven mitt
  • 1 airtight container

Ingredients

  • 1/2 cup raw, green coffee beans

Instructions

  • Measure out 1/2 cup of green coffee beans and pour them into the popper where you would normally place popcorn kernels.
  • Turn on the air popper. Place a bowl in front of the machine to catch the chaff.
  • Watch the beans swirl around in the machine. They won't pop out like popcorn. As the machine heats up, the beans will start to turn brown. You'll hear a cracking sound—this is the "first crack," indicating a light roast (City Roast).
  • For a darker roast, continue roasting past the first crack until you hear a second crack, which sounds like Rice Krispies crackling in milk (Full City or dark roast).
  • Once you reach the desired roast level, quickly turn off the popper and pour the beans into one of the colanders.
  • Using oven mitts (the popper and beans will be hot!), cool the beans by pouring them between the two colanders until they are just warm to the touch.
  • Place the beans in an airtight container, but do not seal it. Allow the beans to "de-gas" for at least 2 hours, up to overnight, to develop their full flavor.

Notes

Roasting outdoors is recommended due to the smoke and chaff produced.
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