Ruby Pie is a synthesized food item in Atelier Rorona: The Alchemist of Arland. The ability to make the Ruby Pie is unlocked only after Rorona creates each "Alchemy Pie" (Living Pie, Pielixir, Piemeteor and Dunkelpiet) at a quality of 80+. This pie serves only as a decadent showcase of Rorona's pie making (and alchemy) abilities. Making every pie at a quality of 80 or higher is required for the "Pie Shop" ending. Esty may request these pies at the castle as an available Front Quest.