Understanding the cart, the wok, the charcoal — why Thai street food tastes the way it does.
Moo ping and gai yang depend on low-heat charcoal — not gas; the slow heat and charcoal smoke create the flavour; no substitute exists.
Commercial Thai wok burners deliver heat far beyond any home stove — the roaring flame is why wok hei (char) exists in pad see ew but almost never in home cooking.
Most Bangkok street carts are custom-built — a gas bottle, wok burner, ingredient shelves, cutting board, and a small charcoal grill integrated into one mobile unit.
A granite mortar and wooden pestle is the foundation of Thai cooking — curry paste, som tum, nam prik; not a decoration but a daily tool.
Street vendors buy bags of machine ice from neighbourhood ice factories; drinks are served over ice in a plastic bag; the entire cold chain is informal but effective.