I haven't seen many caramel porters around here (PA)...in fact Saranac's is the only I can remember specifically.
Why not try to make a clone? Saranac's website gives you the basics:
Beer Style: Porter
Malt Selections: Dark Caramel Malt
Hop Selections: Fuggles & East Kent Goldings
Color: Deep Amber
Mouthfeel / Body: Medium
Food Companions: Spicy, BBQ, and Smoked Meats
Alcohol By Volume: 5.4%
Original Gravity: 13.30 (equates to 1.054)
Figure with the "Dark Caramel Malt" you'll be looking probably Crystal 80 or higher...it gives you the Fuggles and EKG hops, OG 1.054 with an ABV of 5.4 so you'll want to shoot for 1.012 FG (maybe mash pretty low, 151 or so).
I'm still pretty new to recipe creation but maybe something like this: (assuming 70% efficiency)
Code:
Recipe Gravity 1.055 OG Estimated FG 1.014 FG
Recipe Bitterness 28 IBU Alcohol by Volume 5.4%
Recipe Color 28 SRM Alcohol by Weight 4.2%
Ingredients
Quantity Grain Type Use
9.00 lb American two-row Grain Mashed
1.00 lb Crystal 80L Grain Mashed
0.75 lb American chocolate malt Grain Mashed
0.25 lb American black patent Grain Mashed
Quantity Hop Type Time
0.75 oz Fuggles Pellet 60 minutes
0.75 oz Kent Golding Pellet 60 minutes
For extract I'd swap out the 2-row with 6lbs of the lightest DME you can find or 6.6lbs of the lightest LME you can find. If you wanted to actually put some caramel in it, maybe add 1lb or so in the last 15 minutes of the boil and be careful to not let it scorch the bottom of the pot. This will boost the gravity so possibly sub out 1lb of DME for the 1lb of caramel.
Maybe someone else can chime in to see if this looks close?