Nice recipe Natureboy. I recently made my own recipe too and like you say, the fish go mad for it, not like with regular commercial food. It's a feeding frenzy! Silly cheap as well. Like you it's cost me about a fiver for an easy 4 months worth. It was mainly meant just for my discus but they all love it. I recommend anyone giving homemade a go anyway.
My recipe, if you (or anyone for that matter lol) wants to give it a go. I was going to add paprika, but went in the cupboard thinking I'd got some and hadn't.
350g Beef Heart
150g Prawns
32g Spinach
20g Flakes
10g Oatmeal
2 Cloves of garlic
I trimmed all the beef heart of sinew, fat and all the nasty looking bits and passed it through a grinder once. Finely chopped the prawns, garlic, oatmeal and spinach, then added it to the beef heart along with the flakes. I then passed it through the grinder once more.
I put it into ice cube trays thinking one cube would be one days supply, this ended up being far too much. I ended up chopping the frozen cubes into quarters. I just put it in a little pot to defrost and serve using a little piece of a bamboo skewer.