13.5 liters of strike water = approx. 9 liters of wort approx.. 19 litres of sparge until OG = 1.047 ferment @ 17C Mash @ 66 - 68 degrees - If you are making a lower gravity beer, use the higher end of this temperature range to leave the beer with a bit more fullness. If you are making a bigger beer, use the lower end of the range to avoid too full of a character, which can limit drinkability.