The roaster bags have the same effect around £2.00 for 8 bags in tescos you can experiment with flavours in them to im going to be trying lime and coriander at some point this week fresh coriander and seeds and lime juice with some seasoning i will let you know how it turns out. I make blackened chicken and salmon with paprika its more of a smokey taste than spicy so i wouldnt worry about how much you put in