Fill a clay pot with ice cubes
Pour 0.5 oz of lemon juice, 0.5 oz of orange juice, 0.35 oz of sugar syrup and 1.5 oz of genever into a shaker
Add 1 bar spoon of Tierenteyn mustard and 0.15 oz of elixir d'Anvers
Fill the shaker with ice cubes and shake
Strain into the chilled clay pot
Add 0.5 oz of stout and stir gently
Garnish with lemon zest, a sage leaf and pieces of pas de rouge cheese