Multiproxy paleodietary reconstruction using stable isotopes and starch analysis: The case of the archaeological site of Playa del Mango, Granma, Cuba

•Multi-proxy starch and isotope analyses allow more refined reconstruction of subsistence practices in the past.•First isotopic reconstruction of the subsistence strategies of a Banwaroid population from the precolonial Antilles.•Maize and other cultigens were managed by Archaic Age groups from eastern Cuba.•The ubiquity of archaeological starches in dental calculus do not reflect the frequency at which C3 and C4 plants were consumed within a small population.•Groups with different dietary traditions concurrently inhabited Cuba in Archaic Age times.