Set up your Sous Vide to 150 F and be sure the water covers the top of the jar.
In a 32 ounce (1 quart) mason jar, fill the jar with 32 ounces of fresh water and top with the coffee grounds.
Place a lid and a ring on the jar and give it a good shake. Make sure the lid is finger tight.
Brew for 2 hours.
Strain out the grounds and use them in your compost bin or around your flower beds.
Store in the refrigerator for up to two weeks.
This is so much faster than the 12-24 hours that traditional refrigerator cold brew takes!Another advantage of this method is you can make multiple jars of the cold brew base at one time without taking up precious refrigerator space. Refrigerator space is always at a premium in my house.