Cacio e Pepe

Method

1. toast2 min
   dry pan, medium, until fragrant
   the cracked peppercorns until they smoke faintly — toasting is what turns pepper from a garnish into the co-star the name promises; pre-ground pepper skips this and the dish tastes of dust
2. boil9 min
   half the usual water, lightly salted
   pasta in shallow water on purpose — less water means the starch concentrates, and that starch is the only emulsifier this sauce gets; the cheese is already salty, so the water is salted at half strength
3. mix3 min
   cold paste, while the pasta cooks
   Pecorino + a few spoonfuls of cool water mashed into a thick paste — this is the anti-clump insurance: cheese that hydrates cold melts smooth, cheese hit directly with boiling water seizes into strings on contact
4. toss3 min
   off heat, pan warm not hot
   pasta pulled a minute early into the pepper pan with a ladle of pasta water, then the cheese paste, tossed relentlessly off the flame — the sauce forms between 140 and 160°F; over direct heat it splits into grease and curds, which is the entire failure mode of this dish
5. toss1 min
   loosening with pasta water
   with more starchy water a spoonful at a time until it flows like cream and clings — it tightens by the second, and the difference between glossy and gluey is about thirty seconds and one more spoonful