Executable

Can I get this ground for espresso?

ALS-COFFEE-1.3-GRIND-001

This question is asked as a test and produces a result for a real page.

Assertion

espresso_grind_option option_available true

Applicability

applies when
the product is roasted coffee sold by mass and the seller offers any grind choice
signal
product_type or title indicates coffee

Accepted evidence

  • product_options — a purchasable option value naming espresso as a grind e.g. Espresso
  • variant_availability — the matching variant is listed and marked available

Explicitly insufficient evidence

What does not count, and why. Published because the omission is where a check quietly becomes a claim.

  • "Espresso Blend" or "Espresso Roast" as a product or blend name
    This is a naming and roast-style convention, not a grind claim; a whole-bean-only product can carry it, and treating the words as a grind assertion inverts what the seller said.
  • "suitable for espresso" or "built for espresso" in prose
    A recommendation about which brewer the coffee suits is not an assertion that a matching grind is selectable, and it states nothing about particle size.
  • a grind option named only by a number or grinder setting
    Grinder dial numbers are proprietary and are not comparable across grinders or even across units of the same model, so they name no point on any scale.
  • "fine grind" offered as equivalent to espresso
    Fine, medium and coarse are seller-relative labels that published scales disagree about, and the espresso band alone spans roughly a factor of two, so a coarseness word does not resolve to the espresso case.

Conflict rules

  • When the page recommends espresso brewing but offers no espresso grind option — then this entry fails; the brew-fit recommendation is a separate advisory question precedence: product_options > product_description
  • When an espresso option exists but the page states a coarse micron figure — then record the internal contradiction rather than resolving it; the standard reports evidence, not which side is right

What a pass licenses

A pass establishes: That an option value naming espresso is purchasable on this product at the time of the test.

A pass does NOT establish: That the coffee is ground at all, that any particular particle size is delivered, or that the grind is suitable for the buyer's machine.

Discrimination

Measured fail rate: 84.8% (84 of 99 adjudicated)

95% interval: 76.5% – 90.6%, against a 15-85% target band (wilson95 vs target band)

Verdict: Discriminating — the measured rate lies inside the target band, so the answer separates stores from one another.

Recomputed by `standards/coffee/issue_v1_2.ts` from experiments/v3-2/standard_run3.jsonl through the shipped `verdictFor` in standards/discrimination.ts; no re-run, no network, no spend. Cross-checked against experiments/v3-2/discrimination.json and standards/coffee/v1.0/fitness.json.

Authored expectation: no prediction, confidence low. The numeric band this standard used to carry is not published at this grammar version.

Espresso is the most commonly named brew-specific grind, but most sellers expose either no grind choice or only a general ground option, so the row should fail for a clear majority. The band sits high in the target range deliberately and the upper bound is set at the limit because a rate above it would carry little information.

The numeric fail-rate band this reasoning was authored with is NOT carried at grammar 1.2 and is not reproduced here. Authored bands held 1 of 10 against this category's own sample and every miss was HIGH, so a direction derived from the band would inherit the error that condemned it (SCHEMA.md §9.3 step 3). The band survives in ALS-COFFEE v1.1 (standard_hash f8ec2780f60c38931913e5b6cd37506500c8462709209de7180ba6691d6137e7), which is byte-frozen and still served.

Known gaps

  • no adversarial-corpus coverage exists for variant_option at all — false_pass

For a shopper

Grind size is the single thing most likely to make a good coffee taste bad in your brewer, and there is no agreed scale behind words like fine or medium. The check a buyer can do is whether the seller lets you pick a grind named for your machine, rather than trusting an adjective.

For a merchant

Offer espresso as a named, purchasable grind option value rather than describing brewer suitability in prose, and state the particle-size target alongside it where you know it.

Grounding