This Is How You Are Ruining Your Coffee

You need to remember that coffee has three enemies: light, air, and heat. So, you need to make sure that the packaging is airtight and consists of 3-layers of foil. It is best if it had a valve that can allow the air to leave but never get inside. Also, you can store coffee beans in a glass or tin can.

In order to guarantee that your coffee will not have a metallic taste, you need to check that there is no rust. Also, plastic packaging indicates a low-quality product, so it is best if you avoid purchasing them in those packages or store the coffee in it.