a [head-clearing] dose of stoplight-red chile oil.

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Senior Member
Source: In an Endless Loop of Noodles

Another noodle, called liang pi, is a street food as common in Xian as the hot dog in Manhattan, said Mr. Shi’s son, Jason Wang. Cool, smooth, chewy ribbons of steamed wheat starch, liang pi are tossed with wrinkled tablets of house-made seitan and a head-clearing dose of stoplight-red chile oil.
Hi everyone! What does the bold part mean?
  • Scrawny goat

    Senior Member
    English - Ireland
    The heat of the chile oil causes the nose to run. If the person eating the dish had a cold or a blocked nose this would ‘clear their head’.
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