We've been through:
Recipe folder with loose recipes in sections (Appetisers, meat, fish, baking, etc, etc - been through the lot)
Recipe binder with recipes written out A-Z
Recipe file (photo file) with recipes slipped in
The whole two shelves of cookbooks in the kitchen, in case recipe has fallen out of wherever it was
Pc One Note recipe section
Pc search
Loose recipes shoved on top of cookbooks 'to be sorted/recently used'
Bits and pieces in little tub on worktop, inc. receipts, newly-scribbled recipes, recently-used recipes
Moneysavingexpert, where I think the recipe came from, but only get links to more links, to yet more links, to no actual recipe
Yahoo & google search, to several recipes, but not the one we know we have.
We could probably guess, it's something like flour, w/meal flour, oxo cube, water, but was there oil? Yeast??