Domaine Laurens website - and that of Vine Trail which imports it into the UK, it's not 'natural' or even organic but I'm including it because it tastes it.
We drank it last night at a local restaurant in Bristol (Source Café) and it was totally delicious - with bright, wild hedgerow fruit and a slightly smokey edge. It's made from Fer Servadou, a grape indigenous to south-west France that reminds me of Cabernet Franc, with which it's often blended.
The winemaking is traditional according to the Laurens site or, as they rather nicely put it when you run the site through Google Translate, "Winemaking traditionnell with several power cuts during fermentation". (Basically it's racked.)
"Guard 4/5 years" though I doubt it will last that long. It certainly wouldn't in our house.
Oh, and it's only 12.5% for those of you looking for wines that are lower in alcohol.