🛠️ Invention or technique

Popcorn (popping maize)

Palomitas de maíz (maíz reventón)

Date
c. 4700 BCE · confidence low
Place
Paredones and Huaca Prieta, Chicama Valley, La Libertad, Peru
Credited to
Preceramic farmers of the northern Andean coast
Field
Life & health

⚠️ Disputed: the sources disagree.

What it is

Maize cobs and kernels with heat-altered starch from Peruvian preceramic sites indicate that popping maize was already being toasted some 6700 years ago. The hard-hulled kernel bursts on heating and became both a snack and an offering.

The Peruvian remains (starch and cob study at Paredones and Huaca Prieta, 2012) suggest popping-type maize but do not by themselves prove it was popped. Other popcorn-type cobs from Bat Cave (New Mexico) date to around 3600 BC, and the Peruvian ones would be older.

What it led to

  • maize as a portable and ritual food in the Andes and Mesoamerica
  • selection of hard-hulled maize races
  • worldwide popularity as a cinema snack from the 20th century
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Sources✓ verified 2026-11-04