The policy is part of the Co-operation Agreement between the Welsh Government and Plaid Cymru, which will see free school meals extended to all primary school pupils over the next three years.
Fel rhan o’r Cytundeb Cydweithredu rhwng Llywodraeth Cymru a Phlaid Cymru, bydd holl blant ysgol gynradd Cymru yn cael prydau ysgol am ddim erbyn 2024.