Bumping an ancient thread here I know, but for the benefit of people (like me) who find this on google etc...
Way way back**, there used to be two sizes of condensed milk tins in the UK - 7 oz and 14 oz. These days they only sell the "big" cans/tins - which are now labelled as 397 g (i.e. 14 oz). A small can of condensed milk would definitely have meant 7 oz.
This recipe came from those old days - I remember cos I used to make it.
What I'm personally confused about is whether it was evaporated or condensed milk in the book (might have to visit the library!). I remember it as condensed, but everything I can find on the net says evaporated
If it really does say evaporated milk in the recipe then I'm a little unsure - it may or may not have been in the same size tins as the condensed stuff. Today a quick search on a supermarket website suggests they sell it in 170 g and 410 g sizes. Weird, eh?
Will be making it today btw, and will probably go with evaporated
** I mean the 70s and 80s...