Throw another planet on the barbie...
The sun is shining, the weather is sweet and like many people we've been having a few barbecues. These can be a eco-minefield - some charcoal can be from the clearance of endangered mangrove swamps, 'briquettes' and lighters are oil based etc, etc.
The greenest charcoal we have found is Great North Charcoal which is locally produced from sustainably coppiced woodland. But if you don't have a resource like this on your doorstep, some bigger brands are FSC accredited (eg "Big K") so shouldn't be too damaging.
Another little eco-trick (see above) is to use strips of waste tetra-paks (recycling facilities for these are rare) as fire lighters - you can't use the foil backed cartons and make sure you don't use the plastic spout or it could get nasty!
According to this study, charcoal has a carbon footprint than LPG. I don't understand this as charcoal is a biomass fuel so if it is harvested sustainably (as above), it should be almost carbon neutral. I assume the study used the fact that most charcoal is imported.