Cast Iron Ultimate Bundle vs Lancaster Cast Iron Seasoning: which is safer?

Cast Iron Ultimate Bundle is the clear pick. Lancaster Cast Iron Seasoning 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

Why this gradeBuy

Peanut Oil

Lancaster Cast Iron Seasoning

PFAS grade

D 65/100

Overall grade

F 47/100

Verdict

Skip

Hazard flags

⚑ 3

Material

peanut oil (liquid seasoning/condiment)

Confidence

92%

PossibleOil oxidation and rancidity

ReportedPeanut allergen (cross-contact or labeling)

PossibleCoating buildup or film degradation on cast iron

Why this grade

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