Libradi thank you. It was made up, but sort of using the method from a couple of recipes that seemed ok, but I wasn't totally happy with the ingredients that those recipes had, so I worked with what I had and what I thought might work.
I must confess that I draw the line at making my own home-made stock for soup, it takes too much time and probably uses more electricity/gas, so may actually increase the cost? (Not totally sure on that one.)
I use a good make of stock cube, and tend not to add any extra salt, this can always be added at the table to taste.
Forgot to add, that when I made the chowder type thing, I also bunged in a lonely rasher of smoked bacon that would have otherwise gone to waste!
A rough precis of it would be:
Butter
Bay leaf
Onion, finely chopped
Rasher of smoked bacon, snipped into smallish pieces with scissors
Smoked haddock, skinned & de-boned, the cubed
A couple of potatoes, peeled and sliced
A couple of handfuls of prawns, defrosted
Ditto sweetcorn (I buy bags of frozen sweetcorn rather than cans, that way you can cook exactly what you need)
Fish stock (Knorr cube!)
Milk
You can probably tell from the above that exact measures are not essential!
Melt butter,cook onion & bacon until soft. Add haddock and potatoes. Stir a bit, for a while.
Add stock, milk and bayleaf. Cover and cook on low to moderate heat for about 30 minutes.
Lob in prawns and sweetcorn. Cook for a bit longer, say around 5 to 10 mintes, but gently.
Thickness will depend on the amount of liquid (stock & milk) added, but if you are trying to make a reasonable quantity of soup with a small amount of fish etc, then you can try adding a desert spoonful of flour after you have cooked the onion & bacon, stirring it about for a minute or 2 before adding the stock.
Perhaps I should put this in the competition/recipe thread, but I fear it may be a bit too vague!