WarningRule id: canning-glass-thermal
Canning glass not annealed for sustained flame
Preserving jars are tempered for pressure during canning, not for the repeated thermal cycling of a candle. They can be used cautiously: keep burn sessions under three hours, never burn down to dry, and stay below ten percent fragrance load.
What this means for your recipe
When this rule fires the recipe loses 15 points and drops a band. Worth addressing before selling. The same rule fires every time the underlying condition is true, so the way to lift the score is to change the recipe, not the rule.
Primary sources
Editorial content, not legal advice. Verify against the current text of the regulation before commercial sale.