After 3 weeks off work and the wife nagging that there's no room in the freezer for food with all the mackerel in there I tried to make some of the above. I used equal parts by volume of dried bread and mackerel with a bottle of cod liver oil. I made this mistake of making it in the kitchen which stunk like an abandoned brothel until I got some flash lemon sprayed about and all cleaned up. I was dreading the missus coming down as she'd only just cleaned the kitchen the day before and I'm not the tidiest of people. My question is do other people make it and is there anything else they put in? I've still rakes of mackerel in the freezer and I was thinking about making another block. I was also going to use it on the kayak anchor, but does it attract the crabs as much as the fish as I'm already an expert at catching crabs, the crustacean ones I mean too!