French press and filter coffee are great, but if you’re in a hurry, capsules are the way to go – you have warm, steaming coffee in seconds. But what’s the catch? Many coffee capsules are made of aluminium. “It’s the most environmentally unfriendly coffee capsule there is,” says Thomas Fischer from consumer group Environmental Action Germany (DUH). Fischer describes the energy-intensive process: First, bauxite ore, from which aluminium is made, is mined. Large areas of land are dug up for mining, natural areas are destroyed and toxic chemicals are used. “Red mud is a byproduct of the process. I…