Not the wine, the wine bottles.
Google heavy bottles and you'll see articles from people like Tim Atkin and from Decanter deploring the amount of glass used in some bottles, presumably with the intention that people will assume that weight is directly proportional to quality (similar to the long time Mondavi credo that gravitas comes with oak, regardless of the wine).
I have hit a couple of heavy weight bottles (which, I might mention, cost us more than many because the shipping costs are included in the seller's cost, then marked up, and THEN, our provincial liquor monopoly charges a surcharge based on that number, which includes the shipping for those heavy bottles).
I thought we'd hit a big one when we opened a 2007 Boekenhoutskloof Syrah that was a poretty darned heavy bottle. Empty, it weighed 1,062 grams (or 2.34 pounds) empty.
I thought that was big until I had a Rioja I wasn't familiar with earlier this week, an Ysios.
You really should look at the winery:
This puppy, empty, weighs 1.2 kg. (2.64 lbs.)
Given that the British wine industry says that a standard average weight is 500 g, this bottle weighs 5 times what a normal bottle does, empty.
Does anyone else have a bottle they think would feature in a list of heavyweights? Let's say anything at 2.2 lbs./1 kg are eligible.