Using
a moka (a three-chamber stovetop coffeemaker) is a low-tech, simple,
reliable, non-electric, but excellent way to make espresso.
Coffees
commonly used for espresso include Ethiopia Yrgacheffe and top-quality Central
American and Indonesian beans darkly roasted.
There
is a slight difference between steamed milk and foamed milk in espresso drinks.
Steamed milk will be about 40°-60°F below the boiling point, but foamed milk will
be slightly cooler because of the injection of air into the milk.
Due
to the emulsification of the oils in espresso which results in in a syrupy liquid,
the delightful taste of the beverage can linger in your palate for up to 20 minutes
and let you savor the experience long after finishing with your drink.
Espresso
is thicker than coffee because the pressure under which it is made forces the
water to emulsify the oils and proteins in the coffee.
To
achieve the proper pressure or "bars" in a home espresso machine, consider
purchasing a pump machine made by Rancilio
or Faema.
The
difference between a "wet" and a "dry" cappuccino is steamed
milk. A "wet" cappuccino is espresso with both steamed milk
and milk foam. A "dry" cappuccino is only espresso and milk foam
without steamed milk.
One
trick to making a good espresso drink is to mix and serve it quickly because the
espresso flavor begins to fade rapidly as it cools.
There
are basically two types of espresso "pours." The ristretto,
or short pour, is 0.75-1.0 oz. of a single espresso poured for about 20 seconds
creating a strong concentrated espresso. The lungo, or long pour, is
1.5-2.0 oz. of a single espresso with pour time nearly 30 seconds. A ristretto
is used generally for hot espresso drinks with milk and cold espresso drinks while
the lungo is generally used for an American-style straight espresso.
Stainless
steel containers used to collect the espresso when it is being made should be
preheated to give the best flavor to the espresso.
Crema
is the dense brownish foam atop a straight shot of espresso. It is rich
with aroma and flavor and an indicator of a well extracted espresso. The
crema is the separation of about 10% of the oils in the coffee during the espresso
extraction process combining with bubbles of coffee gas and gelatinous colloids.
The thickness of the crema slows the natural loss of heat and aroma from the espresso.
When
buying a home espresso machine, make sure the steam wand is movable. This
will ensure ease of positioning the pitcher no matter its size.
Cold
milk and a cold stainless steel pitcher are used for the best results when steaming
and frothing milk for espresso drinks. Warm milk does not foam well.
During the steaming process, milk proteins coagulate and do so better if the milk
and container are cold.
The
lower the milk's fat content, the better it will foam.
Espresso
purists prefer a 1 oz. shot rather than a 1½ oz. shot for the most flavor.
The reason for this is that running more than 1¼ oz. of water through the proper
amount of espresso (about ¼ ounce), the extraction will begin to turn more bitter.
A
blind person would likely have an easier time foaming and steaming milk for espresso
drinks than a deaf person. The ability to complete the foaming and steaming
process correctly is very dependent upon the barista listening to the sound made
from air being injected into the milk.
The
best water temperature for making espresso is in the range of 192-198 degrees
F with 195 the best. Less than 192 and there will be a noticeable sourness;
over 198 and the espresso burns and will have a sharp taste.
What
truly distinguishes espresso from regular coffee is its high concentration of
flavor and aroma. The quality of both espresso and coffee depend upon the
equipment (grinder and brewer) and the ingredients (a good blend and good water).
However, espresso has an additional ingredient that makes a difference:
the skill of the person operating the equipment.
Espresso
must be drunk soon after it is made for it loses its flavor quickly as it cools.
When
making your espresso or coffee at home, your brew will be improved if you let
your chlorinated tap water sit for 12 to 24 hours uncovered to diffuse the chlorine.
Coffee
can be made from darker or lighter roasts, but for espresso, it is recommended
that a darker roast be used. The darker roast allows better water penetration
in the grounds as well as reduces the acidity.
For
the best espresso, grind your beans just before making your brew.
A
master in the art of making espresso drinks is called a barista. Some baristas
make a performance out of making drinks by juggling cups, bottles, and other items.
The barista is a respected job in Italy, and the average age of a barista is nearly
50.
In
an espresso drink, the crema -- the light brown foam atop the drink -- slows the
loss of both aroma and heat from the espresso before it is served.
A
double espresso (i.e., two shots of espresso) will contain about the
same amount of caffeine as a 12-oz. mug of coffee. Why? Because the
amount of ground coffee beans used to make both is about the same. Hot water
is such a good solvent for caffeine that just passing the water through the ground
coffee is enough to absorb nearly all of the caffeine whatever the brewing method
used.
Although
any milk can be foamed for your espresso drinks, some work better than others.
Half-and-half or cream are challenging from which to get much foam. They
steam well, but getting foam is difficult. Skim milk foams the fastest,
but creates a dry foam that is not real palatable. Most American baristas
favor 1% or 2% milk for the best foam. However, Italian baristas think whole
milk with its fat content gives a better "mouthfeel" to the foam.
The
porta-filter is the handled unit into which espresso ground coffee is packed just
prior to making an espresso brew. The port-filter should not be attached
to the brew chamber until the extraction is ready to be made immediately.
Leaving the porta-filter with the espresso sitting attached to the brew chamber
will burn the fresh coffee due to the heat radiating from the brewing unit.
It
is the protein content in milk that generates the foam for espresso drinks.
Unused steamed milk can be re-used for espresso drinks if immediately refrigerated
and if some new milk is added to produce the foam the next time it is used.
If
you hear a loud roaring and howling sound when your when your milk is being steamed
or foamed for your espresso drink, you know your milk is being scalded.
The steam wand is too far below the surface and will scald the milk instead of
steaming or foaming it which is done at the top level of the milk and creates
a much lighter sound.
A
"double" describes the amount of espresso coffee used to make an espresso
drink. A "double" is 14 grams, or twice the amount of a "single."
In an American Style "double," twice the amount of water is used with
the freshly ground espresso. In a European Style "double," only
a single amount of water is used.