Fresh vs Frozen

From: Tyre Lanier (tyre@unity.ncsu.edu)
Date: Thu Apr 12 2007 - 11:08:15 PDT

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    One of the first projects I did upon joining the faculty of NC State
    University in the late 70s was to conduct a marketing study in a
    number of local supermarkets wherein I compared the sales rate of
    traypacked, unfrozen fish having one of two different labels, side by
    side. In the beginning we always compared same species, same cuts
    (fillets); actually in truth, exactly the same fish, just different
    labels. Later we did vary the fish between the two types of labels;
    read on...

    Actually each fish package had two labels; the one giving the
    customary information of species, weight, etc. and the second label
    being that which was varied in the study: one stated "fresh, never
    frozen" and the other was "previously frozen for your protection". We
    ran this study for many weeks, and did not see any distinct
    difference in purchase rate between the two labels, unless we varied
    the "freshness" (days post harvest, or post thawing in some cases) of
    fish in the tray packs. Whenever one pack had visible liquid (drip or
    purge) it would be differentiated against, or if one had noticeable
    odor compared to the other, it would be differentiated against.

    We concluded from this limited study that labeling "previously frozen
    for your protection" would not automatically dissuade most consumers
    from purchasing; that they were relying more on their eyes and noses
    examining the fish than reading the special labels, or caring what
    those labels said. Had we actually asked people which label they
    would prefer (i.e., whether they would prefer to buy "never frozen"
    rather than "previously frozen"), I have no doubt that most if not
    all would have said they would prefer the former, just as some of you
    have indicated that your focus groups have responded. But in actual
    practice, when the fish are presented in an unfrozen form, consumers
    seemed to pay less attention to such labeled information than they
    did to what their eyes and nose told them about the "quality" of what
    they wanted to purchase.

    I have had many conversations with fish retailers over the years
    since, and I sense that this is probably true: people if asked say
    they want "strictly fresh" when purchasing raw fish (and probably
    entrees in restaurants as well), and at retail they almost certainly
    prefer to buy fish in an unfrozen state because (1) psychologically
    it is more appealing than a crusty frozen piece of meat; and (2) they
    believe they have some ability to sense its "freshness" and "quality"
    when unfrozen, even if traypacked.

    This project was carried out because at the time we were convinced
    that the transport chain of fish from boat to plate was too
    inconsistent to allow unfrozen fish to be reliably delivered in top
    organoleptic quality throughout the year. Thus, freezing at sea,
    plus proper controlled thawing and use of a special traypack (in
    which the film would not fog and which was designed to absorb thaw
    drip) should deliver a more consistently high organoleptic quality of
    fish to consumers at retail. Unfortunately for our fledgling
    program, about that time the state of Maine cranked up a "strictly
    fresh never frozen" PR campaign to convince consumers that we were
    liars (no, really they thought they could pull this off with improved
    air shipping etc.) and this scared off our project supporters.

    A footnote: A few years after this I sent a student around to many
    retail fish markets for an entire summer, noting the apparent
    organoleptic quality of fish that was offered in the unfrozen
    condition. Virtually all of the fish evaluated was either not
    labeled as to whether it had been frozen or not, or was labeled as
    "fresh" (implying "never frozen"). Then the student tested the fish
    with one of the old Torry meters. If the apparent organoleptic
    quality was high but the Torry meter reading indicated a low
    "freshness", we presumed that the fish had in fact been previously
    frozen. Fully 50% or more of the fish that by presentation was
    implicated as "fresh" had in fact been frozen, judging by these
    criteria. So we documented to some extent the common knowledge that
    fish handlers have come to know that they can more economically
    deliver higher quality fish, in the unfrozen form most consumers
    prefer, by thawing high quality frozen fish and presenting them as
    "fresh".

    I am told that our industry suffers relative to poultry and meats
    because consumers don't know how to properly cook fish at home. I am
    convinced that also, we cannot/have not deliver(ed), on a consistent
    basis year in-year out, the high level of organoleptic quality in
    our product that leads to trust on the part of the consumer. That's
    a major challenge for a hunt-and-kill meat industry, particularly one
    so far flung from the consumer's table as is the fish harvesting
    industry, and dealing with such a highly perishable/sensitive product.

    -- 
    Tyre C. Lanier, Ph.D.
    Prof., Food Science, NCSU
    office 919-513-2094
    cell 919-389-9528
    tyre@unity.ncsu.edu
    tyre@mycingular.blackberry.net
    



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