I've a copy of the sheet music that Jim mentioned upstream (in 2011).

I Do Like a Basin Full of Hot-Pot, sung with enormous success by Nellie Wallace, published by Campbell Connelly & Co. 10 Denmark St, London WC2.

By Fred Shuff with ukulele arrangement by Harry J. Stafford.

Differences in lyrics between Gracie Field's version and as sung by Nellie Wallace are:

(1) consistently instead of "'ot 'otpot", "Hot-Pot Hot!"

(2) "A turkey's only got two legs as ev'ry body knows,
I always sing as they pass on to me the parson's nose".

(3) "It's a fine old feed in Lan-ca-sheer, The county I was born in".

(4) We offered him some Glax-o, he said 'E said, "Take that stuff a way!".

Joseph Nathan and Co. (later known as Glaxo Laboratories) began producing dried-milk baby food in 1904 in Bunnythorpe, New Zealand, first known as Defiance, then as Glaxo (from lacto), under the slogan "Glaxo builds bonny babies." (source - wikipedia entry for GlaxoSmithKline, consulted today - 16/01/2022).

I've not found any metadata for any recording of Nellie Wallace's version - would be interested if anyone finds one. In the meantime, will learn the accompaniment and find someone to sing along!