Cast Iron Ultimate Bundle vs Field Company Cast Iron Seasoning Oil: which is safer?
Cast Iron Ultimate Bundle is the clear pick. Field Company Cast Iron Seasoning Oil carries a failing PFAS grade, and we never recommend buying a failing product.
Our pick
Coconut Oil
Cast Iron Ultimate Bundle
PFAS grade
A 90/100
Overall grade
B 82/100
Verdict
Buy
Hazard flags
⚑ 2
Material
cast iron, bare or seasoned with coconut oil
Confidence
92%
PossibleIron leaching into food
PossibleRust and surface degradation
Hemp Oil
Field Company Cast Iron Seasoning Oil
PFAS grade
D 65/100
Overall grade
F 57/100
Verdict
Skip
Hazard flags
⚑ 2
Material
Hemp oil seasoning, applied to bare cast iron
Confidence
82%
PossibleOil oxidation and rancidity
PossibleSmoke or fume inhalation at high heat
Both products run through the same public rubric: materials, coatings, brand disclosure, lab findings, and recalls, plus a beyond-PFAS hazard analysis. Grades are model-based estimates, not lab tests. How grades work →
More cast iron cookware seasoning: see the full ranking