Nic, we were blown away by this one. I made it using home made Fish Stock (made using fish we caught) and fresh fish caught this afternoon about 3 hours before dinner. We bought the tomatoes,herbs and lemons at a farm gate so quite a special dish. I used more harissa than you suggested and just a big handful of parsley (not sure of the weight). We spent all dinner oohing and ahhing at the wonderful flavours and deciding who we love enough to make it for when we get home. We are currently catching enough fish to eat it everyday (thank goodness for our freezer) so this one will be made again really soon and I'll be making more fish stock to do so!