Each bar is wrapped twice — first in an edible rice wafer called ostia, then in thin colored paper often cut with a fringe — so it keeps without refrigeration in Pampanga's heat.
Ground cashews are worked into a dense, marzipan-like nougat bar and sealed inside a paper-thin white wafer, giving each bite a soft crunch that dissolves almost instantly. Sta. Rita's market stalls sell them individually wrapped, stacked in trays by the dozen.