A fitted relationship between blend proportions and sensory responses should be used only within the tested feasible region and only after adequacy or validation evidence supports the model.
A model can still guide the next experiment outside its strongest region, but that use should be labeled exploratory and confirmed with new trials.
NIST/SEMATECH — Mixture-design planning begins with the response and feasible regionNIST/SEMATECH — Simplex-lattice designs map systematic ratio gridsNIST/SEMATECH — Simplex-centroid designs screen pure, pairwise, and collective behaviorNIST/SEMATECH — Constrained mixture designs search only the feasible formula regionMixture surfaces are empirical. An attractive contour or predicted optimum can be an artifact of sparse points, a saturated model, missing interior coverage, or unmodeled sensory noise.
Synthesized from NIST/SEMATECH mixture-design guidance and bounded to a staged consumer-whiskey pilot.
A Zettel is one durable idea in your own words—not a quotation, source summary, or draft-book claim.
Atomic idea
State one complete idea. It should be understandable on its own and specific enough to connect to other notes.
Reasoning
Explain why the idea is true or useful in Rationale and Implications. Record meaningful objections or exceptions in Counterpoints.
Provenance
Connect one or more Literature Notes. Direct source relations are legacy-only; trace evidence through the literature-note and excerpt chain.
Connections
Apply approved Tags for retrieval and one or more Themes only when the note genuinely advances those interpretive threads.