Consumable
Draught of Vananidir
You feel invigorated just by holding this, as the ocean beckons you to come for a swim.
Draught of Vananidir is a Swamp-tier consumable fermented from 
Mead Base: Vananidir, six bottles from one base after two in-game days. It cuts the stamina cost of swimming by 50% for five minutes and leaves swimming speed untouched. Speed in water comes from 
Tonic of Ratatosk instead, at 7.5%.
Spawn command
With devcommands enabled, this drops Draught of Vananidir at your feet. The ID is case sensitive; the last number is the amount.
Item ID: MeadSwimmer · see the spawn command or all console commands and IDs