See quotations.

1

1838.  Before me, though at the head of many delicacies provided by papa, was an immense field of hopping John; a good dish, to be sure, but no more presentable to strangers at the South than baked beans and pork in New-England. [Note] Bacon and rice.—Caroline Gilman, ‘Recollections of a Southern Matron,’ p. 124. (Italics in the original.)

2

1856.  The greatest luxury with which they [the people along the Congaree River, S.C.] are acquainted is a stew of bacon and peas, with red pepper, which they call ‘Hopping John.’—Olmsted, ‘Slave States,’ p. 506. (N.E.D.)

3

[1830.  The same phrase appears to have a different meaning in England: “What d’ye say to Hopping John, made Tom Nottle’s fashion?—Landlord, mix pint of brandy wi’ half a gallon of your best cider, sugared to your own taste; and pop in about a dozen good roasted apples, hissing hot, to take the chill off.”—George Cruikshank’s ‘Three Courses and a Dessert,’ p. 26.]

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