Mill the grains (including the oats) and place loosely in a grain bag. The oats will swell, so avoid packing them too tightly in the bag. Use more bags if needed. Steep the bag in 2 gallons (~8 L) at a temperature of 154 °F (68 °C) for about 60 minutes. Lift the grain bag out of the steeping liquid and rinse with warm water. Allow the bags to drip into the kettle for a few minutes while you add the malt extract. Do not squeeze the bag. Add enough water to the steeping liquor and malt extract to make a pre-boil volume of 5.9 gallons (22 L) and a gravity of 1.043 (10.6 °P). Stir thoroughly to help dissolve the extract and bring to a boil.
Once the wort is boiling, add the bittering hops. The total wort boil time is one hour after adding the bittering hops. Do not bother with Irish moss or other kettle finings. Add the spices with five minutes remaining. Chill the wort rapidly to 68 °F (20°C), pitch the yeast and aerate thoroughly. Follow the fermentation and packaging instructions for the all-grain version.