A sort of rum punch (milk punch), which, and turtle, were products of the trade of Bristol with the West Indies. So Byron says in the first edition of his “English Bards and Scotch Reviewers”

Too much in turtle Bristol’s sons delight, Too much oer bowls of rack prolong the night.

These lines will not be found in the modern editions; but the following are substituted:

Four turtle feeder’s verse must needs he flat, Though Bristol bloat him with the verdant fat.

Lord Macaulay says of the collations with which the sugar-refiners of Bristol regaled their visitors: “The repast was dressed in the furnace, And was accompanied by a rich brewage made of the best Spanish wine, and celebrated over the whole kingdom as Bristol milk” (“Hist. of England,” vol. i., p. 335) — B.