'Sweet Potato' song - some links and leads

Nancy Raven, a children's singer-songwriter (?) in California, has lyrics on a 1987 CD titled The House We Live In, Vol. I ... attributes the song to the West Indies ...

Soon's we all cook sweet potatoes,
Sweet Potatoes, Sweet Potatoes,
Soon's we all cook sweet potatoes,
Eat 'em right up.

Soon's supper's et, momma hollers,
Momma hollers, momma hollers,
Soon's suppers et, momma hollers,
"Time to go to bed!"

Several verses more ...

Amazon.com has a 30-second clip of "Soon As We All Cook Sweet Potatoes" from the album Pete Seeger At The Village Gate With Memphis Slim And Willie Dixon ... sounds right, same chorus judging by the clip