Do compostable coffee cups compost?

Compostable coffee cups are a step in the right direction, but addressing symptoms not the underlying problems of takeaway grab it and go throw away culture, which is part of a larger problem of pointless consumption.

Compostable coffee cups raise two questions:

  • what to do with the coffee cups
  • do they actually compost

If I pick up a coffee cup then wander down the street what to do with the cup? If thrown in a bin it will join the general waste stream.

Do the cups compost, do they compost on a compost heap? Some cups claim to be biodegradable, a few compostable, some make no claim at all. For example a coffee cup from Morrisons, the outer is card, can be recycled, but what of the inner core, a composite structure forming an integral whole?

Only one way to find out, conduct a little experiment, deposit takeaway coffee cups on a compost heap.

A little collection of cups, including what I believe to be a plant-based cellulose straw. It clams to be biodegradable.

These added to a compost heap a little after midday today. End of June temperatures 27C and forecast higher over the next few days.

Always need a control. Added a cup from Starbucks which helpful staff did not believe to be biodegradeable.

Starbucks have on sale at £1 ugly reusable cups. Bring own reusable coffee cup a small discount of 25p.

As always it is indie coffee shops leading the way. One small chain Boston Tea Party has banned takeaway cups. More need to follow their excellent example, encourage relax in an indie coffee shop with speciality coffee served in glass or plastic.

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