What's the greenest way to wrap my sandwiches?

When I wrap my sandwiches in the morning, should I be using clingfilm or foil?

Question posed via Twitter

This isn't the most pressing environmental crisis facing us today, but this niggling little question - one I have asked myself on the odd occasion - is the focus of this week's discussion.

The immediate and obvious response is to use neither: use a washable container, such as a Tupperware, instead. But both clingfilm (or plastic film to our readers from distant shores) and tin foil (correctly called aluminium foil elsewhere) have proved to be highly convenient for many decades as a quick and easy method of preserving food.

But which is the preferred option from an environmental perspective? Tin foil can and should be recycled, whereas clingfilm - normally made from low-density polyethylene - is typically thrown out with other domestic waste, which then goes to landfill or incineration. Both are made from finite, energy-intensive resources, namely, aluminium and petroleum, respectively.

Is it possible to pick a "winner" from these two less-than-perfect options? Please unwrap your thoughts and deposit them below and I will join the debate with some of my own ideas.

Please send your own environment question to ask.leo.and.lucy@guardian.co.uk.
Or, alternatively, message me on Twitter @leohickman