This will make 5.5 gallons of Porter. Preboil is 7 gallons.

11# 2 Row
1# Chocolate Malt
1# Crystal 40
4 oz. Black Patent
1 oz. Roasted Barley
8 oz. Flaked Barley

Mash at 150 degrees for 60 minutes

Add 8 oz. of Malto Dextrin to boil at 20 minutes

Hops.

1 oz. Northern Brewer at 60 min.
0.5 oz Cascade at 60 min.

Hydrate a package of Nottingham.

This ferments vigorously, so use a blow off or be prepared to wipe up some beer. 

Ferment for 2 weeks, then rack to keg or secondary.