This potion's transparent liquid has floating in it a sliver of fingernail from a fire giant.

The bottle is shaped much like a boiler, squat and cylindrical. Its contents boil, the orange magma-like substance bespeckled with black sediment. A sliver of what seems to be lava rock bobs in the burbling liquid and glows a deep red, like an ember refusing to fade.

I Drink an Potion of Fire Giant Strength
This potion is a most unsavory mix of scalding liquid and claggy charcoal, leaving my mouth stinging and sticky. When I finally manage to get the drink and fingernail down the hatch, my stomach alights. I flex my arms and legs, feeling as fearsome as a mountain full of fire—ready to rend the earth.