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| South African Salt Cured Beef (Biltong) |
Cure and Curing
Cure A chemical agent [Emphasis mine] placed in or on meat or poultry for use in preservation, flavor, or color. (USDA)
The USDA definition of cure seems
reasonable until you examine some of the implicit assumptions made by the
agency before its construction. For example, the language of the USDA implies that salt and sugar are not
"chemicals"
Chemical Preservative Any chemical that, when added to a meat or meat food product, tends to prevent or retard deterioration thereof, but does not include common salt, sugars, vinegars, spices, or oils extracted from spices or substances added to meat and meat food products by exposure to wood smoke. (USDA)
By arbitrarily removing
salt and sugar from their rightful place as chemical compounds, the
USDA eliminates hundreds of products that are traditionally cured
with one or both of these chemicals. So, in the obfuscating terminology
of the USDA, an Iberico ham that is so
well-preserved with salt that it can hang for two years is not cured while one
that has added nitrite but can't last a week in the open air (e.g. Virginia
ham) is cured ham.
Ridiculous.
And what about this definition of
curing that states that only pork can be cured?
Curing Curing is the addition of salt, sodium nitrate (or saltpeter), nitrites and sometimes sugars, seasonings, phosphates and ascorbates to pork for preservation, color development and flavor enhancement. (USDA)
Add the same
handful of chemicals to beef and it's not cured it's, what, seasoned? Given
that the USDA's definition of cure allows it to be applied to "meat and
poultry," the restriction to pork is probably the result of
sloppy editing. Still, it's annoying and confusing.
I suspect that the USDA drew a dividing
line between naturally occurring chemicals like salt and sugar to make
a distinction between curing agents which are toxic only at very high
doses (so high that no one would ingest food so treated) and substances like nitrite
which can cause serious damage in small amounts (Nitrite in Meat). But really, for those of us who
want to understand what curing is and how it occurs, this regulatory language is
more shadow than light.
I think that those of us who
practice the craft of charcuterie, while staying mindful of the law (and
compliant if we produce commercially) will be better off thinking about cures
and curing based on an understanding of what curative substances actually are
and how they behave within and affect the foods into which they are introduced.
All of the substances that we use
when we cure meat and other animal products (and plant products too, but we'll
ignore them for now) have the following characteristics
- They are water or fat or
protein soluble or some combination thereof. In other words, they are chemicals
that can pass thru cell membranes and dissolve in tissue.
- They inhibit the growth
of spoilage microbes limiting the bugs access to water (i.e. lowering the
water activity on and in the food) or via intoxication (poisoning) or cell
damage or some combination thereof.
- In some applications
they enhance water retention by the product cured
- They alter the color of
the cured product via chemical (nitrates) and physical (sugar) means
- They change the taste
and sometimes the aroma of the product
With these shared characteristics
in mind, we can make a first rough draft of a new definition of cure) as in
curing agent)
Any substance that is capable of dissolving in meat (or any comestible animal product) that has the effect preventing or limiting the occurrence of spoilage microbes and altering its flavor and color.
This definition seems to permit
the full range of products that are used for curing to be accepted as curing agents.
Salt, all the sugars, slaked lime (Calcium hydroxide, used to make cured Century Eggs) lye (Sodium
hydroxide e.g. lutefisk),
celery and cherry juice powder (both rich in nitrate) and synthetic nitrates
and nitrites.
Objections?




We'll kick the trip off with a bang, working with a freshly slaughtered pig and getting to work making many traditional salumi: salami, salsiccie, ciccioli, coppa di testa, pancetta and more. Later, we'll learn about preserving fish with vinegar, oil and salt methods. And on our final full day we'll take oninfusions, jams and savor, a local jam with fruits and nuts. 