https://beerandbrewing.com/thresher-coffee-saison-recipe/
Carolina Yeast BL09 - Saison Blend - Prepared 1.5L starter evening prior to brew day
To prepare the coffee: Brew 8 oz (227 g) of medium-ground coffee (preferably an Ethiopian sun-dried or your favorite fruit-forward, light-roasted coffee) using about 45 fl oz (1.3 l) of cold water. Allow to brew for 8−16 hours. Filter out the grounds.
Fermentation:
Chill the wort to 62-64F (16.67-17.7C)
Oxygenate/Aerate the wort with about a 30 second blast of oxygen through a stone.
Place the wort in a temperature controlled environment at 65F (18.3C) for 3 days before letting ramp (or if you're like me and don't have enough space for temp controlling everything - I'll place the fermenter in an iced water bath and let the heat of the day and the ferment melt the ice and raise the temperature to mid 80's and 90's (29-35C). It's perfectly safe to drive a Saison yeast this hard if you've started cooler.