how much priming sugar for a porter?

[brackbrew]

I'm about to bottle a porter, but not sure how much priming sugar to use. I usually use 3/4 cup, but I know different styles have different levels of carbonation. I also used 1.5 tsp of cinnamon and a vanilla bean in the secondary, which could affect head retention.

Any help would be greatly appreciated!

Thanks

 

[Suthrncomfrt1884]

3/4's cup will be fine. Stouts and Porters are usually a little less carbonated that typical beers, but I'd add the normal amount just to be safe. The ingredients you've added shouldn't effect head retention enough to make a huge difference.