Lab Station 01 Modernist Recipe Book

experiment

Lasagna Bolognese with Béchamel — retrospective whole-Recipe report

Primary subject: recipe/lasagna-bolognese-with-bechamel v1

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: Fresh 00-flour pasta layered with slow-cooked ragù, béchamel, and Parmigiano Reggiano. 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 Lasagna Bolognese with Béchamel v1. Its preserved source is recipes-tmp/lasagna-bolognese-with-bechamel.md with SHA-256 deb63dae2bf0e6067f884ebec27dfa19e2805ec1dec6c6edb837a306d110d12d. The serialized draft SHA-256 is 34fd29adfeae44002363ac47957e74d55ba9913c79867fa5815836dc4c82d1ab. 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 — RAGÙ

Ingredient Uses

Key Ingredient Quantity Scaling Use
beef-mince Beef mince 500 g 100.00% Beef mince.
pork-mince Pork mince 250 g 50.00% Pork mince.
pancetta-finely-diced Pancetta, finely diced 100 g 20.00% Pancetta, finely diced.
onion-finely-diced Onion, finely diced 150 g 30.00% Onion, finely diced.
carrot-finely-diced Carrot, finely diced 100 g 20.00% Carrot, finely diced.
celery-finely-diced Celery, finely diced 100 g 20.00% Celery, finely diced.
extra-virgin-olive-oil Extra-virgin olive oil 25 g 5.00% Extra-virgin olive oil.
tomato-paste Tomato paste 50 g 10.00% Tomato paste.
dry-white-wine Dry white wine 200 g 40.00% Dry white wine.
whole-milk Whole milk 200 g 40.00% Whole milk.
passata Passata 400 g 80.00% Passata.
beef-stock Beef stock 300 g 60.00% Beef stock.
fine-salt Fine salt 12 g 2.40% Fine salt.
black-pepper Black pepper 2 g 0.40% Black pepper.
nutmeg-finely-grated Nutmeg, finely grated 0.5 g 0.10% Nutmeg, finely grated.

Method

  1. Render pancetta over medium-low heat for 5 min. Add olive oil, onion, carrot, and celery; cook for 12 min–15 min until soft but not browned.
  2. Add beef and pork. Cook over medium-high heat, breaking up the meat, until its moisture evaporates and the meat begins to brown.
  3. Stir in tomato paste and cook for 2 min. Add wine and reduce until nearly dry.
  4. Add milk and simmer until absorbed. Add passata, stock, salt, pepper, and nutmeg.
  5. Simmer uncovered over very low heat for 2 h–3 h, stirring periodically, until rich and spoonable. Cool before assembly.

Phase Outputs

Key Phase Output Description
bolognese-ragu Bolognese ragu Prepared intermediate for a later Phase. Use 1500 g; retain any remainder.

PHASE B — PASTA

Ingredient Uses

Key Ingredient Quantity Scaling Use
00-flour 00 flour 400 g 80.00% 00 flour.
whole-egg-beaten Whole egg, beaten 250 g 50.00% Whole egg, beaten.
fine-salt Fine salt 4 g 0.80% Fine salt.

Method

  1. Mix flour and salt. Add egg and knead for 8 min–10 min until smooth.
  2. Wrap and rest for 30 min at room temperature.
  3. Roll progressively to approximately 1 mm thick. Cut sheets to fit the baking dish.
  4. Blanch sheets in salted boiling water for 30 s, chill in cold water, and dry on clean cloths.

Phase Outputs

Key Phase Output Description
fresh-pasta-sheets Fresh pasta sheets Prepared intermediate for a later Phase. Use 600 g; retain any remainder.

PHASE C — BÉCHAMEL

Ingredient Uses

Key Ingredient Quantity Scaling Use
whole-milk Whole milk 1000 g 200.00% Whole milk.
unsalted-butter Unsalted butter 80 g 16.00% Unsalted butter.
plain-flour Plain flour 80 g 16.00% Plain flour.
fine-salt Fine salt 10 g 2.00% Fine salt.
nutmeg-finely-grated Nutmeg, finely grated 1 g 0.20% Nutmeg, finely grated.
white-pepper White pepper 1 g 0.20% White pepper.

Method

  1. Warm milk to 70 C–80 C.
  2. Melt butter, whisk in flour, and cook for 2 min without colouring.
  3. Whisk in warm milk gradually. Simmer for 8 min–10 min until smooth and lightly thickened.
  4. Season with salt, nutmeg, and white pepper.

Phase Outputs

Key Phase Output Description
bechamel Bechamel Prepared intermediate for a later Phase. Use 1000 g; retain any remainder.

PHASE D — ASSEMBLY AND BAKING

Ingredient Uses

Key Ingredient Quantity Scaling Use
parmigiano-reggiano-finely-grated Parmigiano Reggiano, finely grated 180 g 36.00% Parmigiano Reggiano, finely grated.
unsalted-butter Unsalted butter 20 g 4.00% Unsalted butter.

Technique Applications

Technique Controls Purpose
Layered assembly 5–6 pasta layers; 180 C; 40 min–45 min Build and bake the complete lasagna.

Method

  1. Measure 1500 g ragù, 600 g prepared pasta sheets and 1000 g béchamel; retain any remainder from each preparation.
  2. Heat oven to 180 C. Butter a 330 mm x 230 mm baking dish.
  3. Spread a thin layer of béchamel in the dish. Add pasta, ragù, béchamel, and Parmigiano; repeat for 5-6 pasta layers.
  4. Finish with béchamel and Parmigiano. Dot with butter.
  5. Bake for 40 min–45 min until bubbling and deeply browned at the edges.
  6. Rest for 20 min–30 min before cutting.

Ragù and béchamel should both be loose enough to hydrate the fresh pasta without flooding the finished lasagna.

Phase Outputs Used

Phase Output Use
Bolognese ragu Use bolognese-ragu. Use 1500 g; retain any remainder.
Fresh pasta sheets Use fresh-pasta-sheets. Use 600 g; retain any remainder.
Bechamel Use bechamel. Use 1000 g; retain any remainder.

Results

Carlo retrospectively reported that the recipes as recorded were all successful and fully tested, and approved this whole formulation for production. No further Recipe-specific observations were supplied. Cooking dates, trial counts, detailed tasting notes and instrument measurements were not supplied. Source yields are estimates, not measured results of this retrospective record. Recorded alternatives have no separate variation-specific testing observations in this report.

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.