WarningRule id: zinc-wick-discouraged
Zinc-cored wicks discouraged in modern recipes
Lead-cored wicks were banned globally in 2003. Zinc cores are still legal but emit more particulate than cotton or wood, and most chandlers have moved on. The rule fires whenever a zinc-cored wick is selected. Prefer a cotton flat-braid of equivalent size.
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.