Black Truffles: While there are many truffle varieties growing in countries all over the
world, black truffles (Tuber Melanosporium) known in France as the Divine
Tubercule and The Black Diamond of French Cuisine, are the most famous
truffles in the world and due to their scarcity, can command very high
prices in the marketplace. Truffles are the best known underground fungi because of their
reputation for excellence in cuisine, being savored in Italian and French
dishes for its aromatic, richly mysterious flavor. The limestone plateau
regions of Perigord in the southwest of France, and Magny are the
world-famous homes of these prized fungi, but are also found southeast of
France, in Italy and Spain and are well known for flavoring pate de foie
gras. White truffles gathered in Alba, Italy, are highly valued as well and
are also dear in price. There are well over 60 different varieties of
truffle and some do grow wild in the United States, but the two choice
varieties are unequivocally the black and white truffles mentioned here,
native only to specific regions of Europe. The unusual flavor of a truffle
is pervasive in a enigmatic way; this breathtaking subtlety of taste, its
penetrating, sweet musty odor is one of the reasons that truffles are so
prized by mushroom lovers.
The truffle business is a chancy thing and so is the supply - this
difficulty partly explains why the price and crop amount varies so much
from year to year. From spore to maturity the truffle takes 10-12 years to
reach full flavor (truffles remain underground even after maturing) and
that, plus their short growing season and large demand, easily explains why
they're so expensive. So, as a result of the delicate and always uncertain
nature of the harvest, much folklore is associated with truffles. A
practice long used in France is called "avec la mouche", that is "with the
fly", or, watching for the swarms of flies that hover above the ripe buried
truffle to tip off the hunters of the hidden treasure. Traditionally pigs
were used to locate them with their acute sense of smell, but lately are
replaced by dogs who have been trained to indicate with their paw the place
where they scent the truffle underground. Dogs are more reliable and less
likely to damage or swallow the black diamond, unlike the pig who is quite
fond of them as well as clumsy in its search. Also, the pig is difficult to
transport, hard to discipline, and tires rather quickly of the project. It
is not instinctual nature for any particular type of dog to look for
truffles; moreover, hunting dogs are not used for the task, as their
inclination would be to sense game rather than truffles. Dogs train easily
however, and generally do the job well, but their attention is only good
for about an hour and a half. The truffle emits a steroid similar in odor
to a boar's pre-mating sex pheromone, explaining the female pig's strong
attraction to and natural seeking of the truffle through its keen sense of
smell. Recent evidence has shown that the truffle's special chemistry may
also be related to a hormone present in the human male sweat glands,
perhaps explaining why people have persistently sought them out as well!
The future of truffle hunting may someday depend on an "electronic nose,"
currently under development in the United States and France. In any event,
the illusive truffle has created a following and a folklore because they
are such a rare and delicious, unique fungi.
Truffles grow naturally in woodlands, their presence indicated by the lack
of plant life at the base of the "truffle tree"- these bare areas are
referred to as terre brulé or "burned ground". Truffles start to grow in
spring and summer, 6 to 12 inches below ground, on the roots of sycamore,
beech trees, or certain species of European oak and are harvested from
December through February. Because of its desirability and scarcity,
effective truffle cultivation would be very profitable; however, fungi that
form mycorrhizae can not be cultivated with the common methods because of
their obligate relationship with the roots of trees. Therefore, a different
and more difficult strategy was required to "grow" truffles. "Cultivating"
truffles requires a good deal of suitable land where the host trees can be
planted; T. melanosporum ( the black winter truffle ) will only grow where
its host tree can grow. To ensure truffle formation, the mycelium of the
truffle is inoculated into the roots of these trees. They then grow
underground and form mycorrhizae with those particular species it favors.
The most successful technique involves planting trees already inoculated
with the melanosporum spores in habitats that already produce truffles.
Unfortunately, the environmental and nutritional necessities for formation
of fruitbodies of truffles are not fully understood. Climate and soil
conditions need to be ideal - truffles thrive in a pH of 7.8 to 8.1.
Furthermore, truffle production in non-native habitats is hindered by
thousands of competing fungi. As of yet, they have not been successfully
cultivated in large quantities and are obviously a challenge to forage in
the wild.
In America, attempts to farm truffles in Texas have to date largely failed.
There may be potential for a fine substitute in California and from Oregon
come reports of promising success with white truffles.
Cultivation attempts have yielded less aromatic truffles with nowhere near
the flavor of the wild fungus. So with European
truffle production having dropped from about 1,000 tons annually 100 years
ago, to 10-60 tons a year today, this well could mark the beginning of a
new industry in the South, where agricultural experts are considering
adding truffles to the list of possible alternative crops for tobacco
farmers. If the U.S. can grow truffles profitably, there would be an
distinct advantage for American consumers over the purchase of French
truffles, simply from a freshness standpoint.
The shape of a truffle is an irregular spheroid with a lumpy, faceted
surface, often described as warty, rough, or ridged skin. The color is
blue-black with fine whitish veins embedded inside and a fleshy texture.
The flavor of truffles should be given center stage in recipes. Delicious
in soups or chopped and sautéed for flavoring sauces particularly those
made with white wine or Champagne, and are often served with pasta. You
can grate raw truffles into salads. Use slices sparingly however - they
are potent as well as expensive! Their flavor is complex, so truffles work
best in delicately flavored dishes like cream sauces. The black truffle of
Perigord and the white truffle of Piedmont are highly prized for their
exceptional taste: the black excells after cooking has accomplished the
full release of flavors. Conversely, the white truffle is best when shaved
directly on the dish before eating. The aroma of truffles is intense enough
to penetrate egg shells when the two are stored together, embuing an
omelette with the truffle essence even before its cooked!
To use a truffle, brush the dirt away or run the truffle under cool water
briefly. Truffles are highly perishable, so you should plan to use them
within a few days after buying them. Adding slices to bourbon will preserve
them - then use the bourbon and truffle pieces to flavor sauces. Fresh
truffles keep well in and are often sold in containers filled with rice.
Don't discard the rice--it was put there to absorb some of the truffle's
exquisite flavor. If you are fortunate enough to encounter the real thing,
enjoy it raw, cooked, or in the form of juice or extract.
TRUFFLE LORE:
Pliny, the Elder, a naturalist and writer of the first century A.D. who,
apparently well acquainted with truffles - regarded as beyond a doubt the
very greatest of all marvels of nature the fact that any plant should
spring up and grow without a root. Of the different truffles, Pliny says,
"There are two kinds of them, the one full of sand, and consequently
injurious to the teeth, the other free from sand and all impurities. They
are distinguished by their colour, which is red, or black, or white within:
those of Africa are the most esteemed. " In medieval Baghdad, desert
truffles were well known and highly revered. These truffles might well have
come from the Kalahari Desert in Botswana, an area that is even known today
for its wealth of truffle mines. The white truffle which the Greeks and
Romans obtained also from Lesbos and Carthage is the "terfez" of the Arabs
of North Africa, the "kames" of those of Eastern Asia. A travel writer of
the 1500's mentions the sight of sometimes up to 25-30 camels laden with
truffles grown in the mountains of Armenia and Turkey, transported over
long distances to be sold in the markets of Damascus. The ancient
Babylonians were enamored of truffles, where they were found in large
quantities at certain seasons of the year, growing on the banks of the
Euphrates and Tigris rivers; considered by the Bedouins a great delicacy,
truffles and mushrooms would form the staple food for the desert
tent-dweller and family for long periods at a time.
Other interesting folklore of the mysterious truffle is linked to the
ancients: Dioscorides thought them tuberous roots, Juvenal attributed them
to thunder and rain and Athenaeus believed their number and size was
proportionate to the number and force of thunder claps. While Cicero
considered them children of the earth, Porphyrus called them children of
the gods. The ancients dedicated the truffle to Venus, believing it to
make women more tender and men more companionable. Bearing no resemblance
to fruit, vegetable, mineral or animal, the ancients were finally provoked
by curiosity to dig into the soil for further explanation of the mysterious
mushroom's secret. In that way, they discovered the underground prize of
the truffle, while still holding onto their original mystical beliefs. In
the 1st century A.D, the author Plutarch drew a more earthy conclusion,
stating that truffles were "mud cooked by lightning'' seeing it as a
conglomeration resulting from the mixed effects of lightening, warmth and
water on the soil. Early scientists countered with the proposal that they
were the less-than-holy result of stag's urine. For years these kinds of
hypotheses and deliberations overshadowed the logic that, in fact a
combination of Mother Nature's miracles of warm weather, darkness and
moisture bring the mushroom to life as the fruiting body of an underground
plant.
In France, truffles were unknown until the 14th century. Like many other
foods at that time that were unfamiliar to Europeans, truffles were
believed to possess powerful aphrodisiac abilities. A colorful folk legend
is told of the Duke of Clarence, recounting his marriage to an Italian
woman whose dowry was of the hills of Alba, Italy - an area rich with
truffles. On his wedding night he was said to have eaten so many truffles,
referred to as "white diamonds," that he died before enjoying their magical
abilities. Today the cost prohitiveness of the truffle would likely take
care of such an untimely end resulting!