BIAB - Infusion mash grains at 68 deg C for 65 mins. Lift grain bag, sparge with 1-2 litres of treated liquor at 75 deg C. Rolling boil for 65 mins, hop additions as per recipe. Crash cool. While cooling add the two cans of liquid malt extract to FV. Add chilled wort, then top up FV with precooled liquor to17 litres. Stir well to aerate. Pitch yeast at 17 deg C. Ferment at 19 deg C. Free rise at 2/3rds attenuation to 22 deg C. Hold until full attenuation. Cool. Add liquid Oak(or oak chips). Cold condition for at least 2 weeks. Carbonate and serve.