Pyerog runestone is a runestone in the Hearts of Stone expansion that is needed to craft the Dumplings runeword which, when in effect, causes any food consumed to regenerate 100% more vitality (i.e. doubling the amount of health regenerated).
- This runestone references the Eastern European dish pierogi, which are filled dumplings created with unleavened dough and prepared either by boiling or baking.
- This runestone has no effect when placed in an upgrade slot, and raises the weapon's level requirement by 1.
- In the crafting menu, this runestone's weight is listed as 0.01 when it is actually 0.03.