You put it into a 15-liter vessel, about three gallons, and it'll cool it down to just above freezing -- three degrees above freezing -- for 24 hours in a 30 degree C environment.
Sæt den ind i en 15-liters beholder, ca. 3 gallons, og den vil køle beholderen ned til lige over frysepunktet, tre grader over frysepunktet, i 24 timer i et 30 grader varmt miljø.