Roberts' incredible success inside the Beijing WaterCube in September was rewarded with the honour of carrying the Great Britain flag at the Paralympics closing ceremony.
We placed the decorative absinthe spoon on top of the glass, a sugar cube on top of that, and let the fountain drip ice water over it for several minutes.
Thewater is afloat with glassy splinters, hardly bigger than an ice cube, ranging up to colossal tabular icebergs, some the size of several football pitches.