When
I talk of repeatability in a measurement process, I mean the
variation in measurements taken by a single person or instrument on
the same item and under the same conditions.
Thinking
about how many times I made the same dough and, during the passed
years, how many times I didn't achieved the same result, I have
developed a simple theory that helped me to make my doughs the more
possible repeatable.
It
certainly isn't a revolutionary theory. Rather, I would say that it
is the result of what I have learned from more experienced people,
with the addition of my personal experience.
A
conclusive kneading factor, is especially for doughs for bread, pizza
and focaccia; the room temperature. Obviously, an higher room
temperature need a shorter rise time or less amount of yeast in the
dough. In some situations I had to decrease both the elements.
Another
factor to consider is the quality of the ingredients. In nutritional
terms, it's easy use products belonging to the same quality but with
nutritional characteristics. Thinking for example the main ingredient
for every dough: the flour.
How many
times you have used the same kind of flour as before, obtaining a
different dough, despite you have surely maintained the identical
quantities of all the ingredients?
As you
will certainly have noticed, if you ever happened to read the chart
of the nutritional values (when available) on the wrapping of the
flours, for the same type of flour (00, 0, 1, 2 or whole wheat) the
percentage of proteins and other components contained, can also vary
in significant way.
In the
same way, for these differences, also the rheological characteristics
of the dough will vary (for rheological characteristics here are
intended its strength and extensibility of the dough).
Moreover,
if we want to consider also another more technical factor, also the
water temperature (or any other liquid used for kneading), has a
relevant part to achieve a result similar to the previously obtained.
There
are also many other factors that must be considered in order to
obtain a “repeatable”
dough: time of kneading, room relative humidity, flour humidity,
temperature of the dough, etc.
But for
the moment I stop here, to avoid to complicate a simple thing, at
least in appearance!
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