From https://punchdrink.com/articles/de-vie-paris-new-cocktail-bar-ice/ "Ice is heavier than concrete," (concrete isn't very specific but cement is at least 50% denser), "it takes over 10 liters of water to make one kilo of ice" (one kilo of ice is one liter of water), I don't know about "no bar in Paris is making their own ice" but this just bizarrely, laughably wrong to the point I'm questioning my own sanity.