Purple is not a food group — it is the allergen code. A purple-handled knife is stored, washed and used apart from everything else so that a gluten-free or nut-free order can be prepared with tools that have provably never touched the allergen.
That makes the colour more consequential here than on the other variants: it is the one where a mix-up has a medical rather than a hygiene consequence. The blade itself is the standard S145 8-inch curved DEXSTEEL chef’s knife.
Dexter-Russell has made cutlery in Southbridge, Massachusetts since 1818 and is the oldest cutlery manufacturer in the United States. The Sani-Safe line is its NSF-certified foodservice range, built around a textured polypropylene handle moulded to the tang so there is no seam for food to lodge in.
