Carbonara — retrospective whole-Recipe report

Hypothesis

Retrospective review expectation stated at recording time: the complete recorded formulation and Method can reach its intended endpoints and produce the following finished dish: Roman-style spaghetti emulsified with guanciale, egg, Pecorino Romano, and black pepper. This is not a hypothesis documented before historical cooking and is not itself an observed outcome.

Procedure

This record was written on 2026-10-02 from Carlo Kruger’s retrospective report on that date. Historical cooking dates and trial counts were not recorded. The exact whole Recipe Version is Carbonara v1. Its preserved source is recipes-tmp/carbonara.md with SHA-256 a9c16d2e3fc43959b96505fc76a2dddb60a21e4cfd08c144626b9e46278d03b9. The serialized draft SHA-256 is 66262b2b2f0d0077a97cfd4642ed9f4160c199ab89593915814fabc72180fb09. The complete formulation and work sequence below are the recorded specification, not newly observed timings, temperatures or yields. Correspondence to past cooking is attributed to Carlo’s statement that the recipes as recorded were fully tested. The historical reconstruction caveats remain in the unchanged source; Carlo’s 2026-10-02 acceptance applies to this formulation and the packet’s explicit clarifications.

PHASE A — MIX EGGS AND CHEESE

Ingredient Uses

Key	Ingredient	Quantity	Scaling	Use
egg-yolk	Egg yolk	72 g	36.00%	Egg yolk.
whole-egg	Whole egg	50 g	25.00%	Whole egg.
pecorino-romano-finely-grated	Pecorino Romano, finely grated	80 g	40.00%	Pecorino Romano, finely grated.
black-pepper-coarsely-ground	Black pepper, coarsely ground	1.5 g	0.75%	Use half the total pepper in the egg mixture.

Method

1. Combine yolks, whole egg, Pecorino, and half the black pepper to form a thick paste.

Phase Outputs

Key	Phase Output	Description
egg-cheese-mixture	Egg cheese mixture	Prepared intermediate for a later Phase. Use all.

PHASE B — RENDER GUANCIALE

Ingredient Uses

Key	Ingredient	Quantity	Scaling	Use
guanciale-cut-into-batons	Guanciale, cut into batons	100 g	50.00%	Guanciale, cut into batons.

Technique Applications

Technique	Controls	Purpose
Fat rendering	Cold pan; medium-low heat; crisp edges	Render guanciale fat.

Method

1. Place guanciale in a cold pan. Cook over medium-low heat for 8 min–10 min until the fat renders and the meat is crisp at the edges.
2. Remove the pan from heat, keeping the guanciale and rendered fat together.

Phase Outputs

Key	Phase Output	Description
rendered-guanciale	Rendered guanciale	Prepared intermediate for a later Phase. Use all guanciale and its rendered fat.

PHASE C — COOK PASTA AND RESERVE WATER

Ingredient Uses

Key	Ingredient	Quantity	Scaling	Use
dried-spaghetti	Dried spaghetti	200 g	100.00%	Dried spaghetti.
fine-salt-for-pasta-water	Fine salt, for pasta water	8 g	4.00%	Fine salt, for pasta water.
water	Water	2000 g	1000.00%	Water.

Method

1. Bring water and salt to a boil.
2. Cook spaghetti until 2 min short of al dente. Reserve at least 150 g pasta water.

Phase Outputs

Key	Phase Output	Description
reserved-pasta-water	Reserved pasta water	Prepared intermediate for a later Phase. Use about 100 g, adding gradually until glossy; retain any remainder.
nearly-cooked-pasta	Nearly cooked pasta	Prepared intermediate for a later Phase. Use all.

PHASE D — EMULSIFY OFF HEAT AND SERVE

Ingredient Uses

Key	Ingredient	Quantity	Scaling	Use
finishing-pepper	Black pepper	1.5 g	0.75%	Finish with the remaining half.

Technique Applications

Technique	Controls	Purpose
Sauce emulsion	Off heat; brief cooling; toss and add water until glossy	Combine egg, cheese, fat and pasta water without curds.

Method

1. Transfer pasta to the guanciale pan and toss briefly over low heat.
2. Remove from heat and cool briefly. Add the egg mixture and toss vigorously.
3. Add about 100 g reserved pasta water gradually, in 15 g–20 g increments, until the sauce is glossy and fluid, with no visible curds.
4. Divide between warm bowls and finish with remaining black pepper.

Phase Outputs Used

Phase Output	Use
Egg cheese mixture	Use egg-cheese-mixture. Use all.
Rendered guanciale	Use rendered-guanciale. Use all guanciale and its rendered fat.
Reserved pasta water	Use reserved-pasta-water. Use about 100 g, adding gradually until glossy; retain any remainder.
Nearly cooked pasta	Use nearly-cooked-pasta. Use all.

Results

Carlo approximately confirmed the formulation: 200 g spaghetti, 100 g guanciale, 72 g yolk, 50 g whole egg, 80 g Pecorino, 8 g salt in 2000 g cooking water, 3 g pepper and about 100 g reserved pasta water used in the sauce. The general off-heat emulsion method was confirmed. His reported result was “rich sauce with a bit of funk and al dente pasta”; the funk was intended and no shortcomings were recalled. Precise cooling duration, pan temperature, historical cooking date and instrument measurements were not verified. The exact version uses brief cooling off heat and observable glossy-emulsion cues. Recorded alternatives have no separate variation-specific testing observations.

Decision

Carlo accepted the formulation as recorded, including the explicit reviewed clarifications, for production in the complete 25-Recipe batch on 2026-10-02. Proceed to normal exact-version Promotion after valid serialization, applicable Curation and reference resolution. Technical validation does not perform that human acceptance. A materially changed formulation needs its own exact-version evidence and acceptance; this report does not automatically follow future changes.