This sounds like Rat's picnic from "The Wind in the Willows", by Kenneth Grahame. One of the picnic items is cold tongue, and Rat runs all the items together as he is telling Mole (as if he is talking quickly).
Here's the passage from chapter one:
The Mole waggled his toes from sheer happiness, spread his chest with
a sigh of full contentment, and leaned back blissfully into the soft
cushions. 'WHAT a day I'm having!' he said. `Let us start at once!'
`Hold hard a minute, then!' said the Rat. He looped the painter
through a ring in his landing-stage, climbed up into his hole above,
and after a short interval reappeared staggering under a fat, wicker
`Shove that under your feet,' he observed to the Mole, as he passed it
down into the boat. Then he untied the painter and took the sculls
'What's inside it?' asked the Mole, wriggling with curiosity.
'There's cold chicken inside it,' replied the Rat briefly;
'O stop, stop,' cried the Mole in ecstacies: `This is too much!'
'Do you really think so?' enquired the Rat seriously. `It's only what
I always take on these little excursions; and the other animals are
always telling me that I'm a mean beast and cut it VERY fine!'