Street food roti griddle metallurgy: heavy cast iron seasoning for rhythmic kottu cutting?
3 Answers from travellers
Commercial kottu roti griddles require thick 16mm to 20mm mild steel or cast-iron circular plates mounted over high-output atmospheric burners. Thin sheet metal warps instantly under thermal cycling and deadens the kinetic bounce of twin stainless steel chopping blades. Griddles are seasoned by heating them to 260°C, applying thin layers of refined coconut oil, and scrubbing the surface with cut onions and salt to polymerize oil into an organic non-stick patina. This smooth surface allows fast chopping without metallic shavings shearing off into the food.
Chefs hold flat rectangular cleavers at a 45-degree angle; striking flat against the plate risks cracking the welded gas burner mountings beneath.
Griddles are scraped clean with wire blocks and re-oiled immediately after morning breakfast service to prevent surface rust formation.
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