Mae ehangu prydau ysgol am ddim i bob plentyn cynradd yn ymrwymiad allweddol yn y Cytundeb Cydweithio tair blynedd rhwng Llywodraeth Cymru a Phlaid Cymru.
Extending free school meals to all primary school children is a key commitment in the three-year Co-operation Agreement between the Welsh Government and Plaid Cymru.