"However, we cannot hope to acquire a good relationship with Jehovah if
we ignore those whom Jesus has appointed to care for his belongings.
Without the assistance of “the faithful and discreet slave,” we would
neither understand the full import of what we read in God’s Word nor
know how to apply it." Examining the Scriptures Daily 2012 Mar 4
Stephen Lett has lovingly explained that God's 'express will' is NOT like a speeding train OR an 'espresso cup of coffee'. Subject to clarification in future Watchtower articles, or 'keynote convention addresses' by the 'faithful and discreet slave' I will make an attempt to explain why the 'faithful slave' has come to this conclusion.
Ask almost anyone and they will
invariably say that espresso has more caffeine than regular coffee. The
assumption makes perfect sense, what else would explain that caffeine buzz we
get when we down a shot of espresso in the morning?
Interesting, but is this correct?
Well that depends on your perspective.
During the
1950's a typical serving size of coffee ranged from 4 to 6 oz. But over
the years our "cup" size has grown six-fold from approximately 6oz to
24oz - depending on the establishment.
According to the National Coffee
Association (NCA) a typical cup of drip coffee (8oz) contains approximately 65-120
mg of caffeine. Not exactly a tight tolerance, but why is there such a
large variation in caffeine content?
Well without getting overly
technical, there are several factors including brew time,
dwell time, water temperature, grind level,
roast level, bean type, blend, etc. that all have a significant affect on the
final extraction of caffeine. We will discuss those a bit later.
Now if we look at the level of
caffeine contained in a typical cup of drip and espresso those figures come in
at about 92.5mg and 40.0mg, respectively. Remember these are averages so the exact amount will
vary.
As you can clearly see drip coffee
with approximately 92.5mg contains a larger concentrationsof caffeine than
espresso - how much more? On average about 2.3x more!
So there we said it - drip coffee has MORE caffeine than espresso!
Case closed, go home!
Well, not exactly!!
If we take this approach its
actually an unfair comparison and we need to compare "apples to
apples".
A more correct approach would be to
compare two beverages in terms of their caffeine concentration per ounce (oz).
In the case of drip coffee, we
need to divide the 65-120 mg of caffeine by its serving size. In this case the
caffeine is distributed over 8 oz resulting in: 8.125 - 15 mg per oz.
That means that for every ounce of
coffee solution we can expect 8.125-15 mg of caffeine. For our purposes lets say
8-15mg
Whereas in espresso, even though we
start off with about a 1/2 to 1/3 less caffeine (ie.
30-50mg) - all this caffeine is contained in just 1 oz of liquid or expressed
numerically as 30
- 50 mg per oz.
Meaning that in just 1 oz of
espresso solution we can expect 30-50mg of caffeine.
So what does all this mean?
Although we can conclude that drip
coffee contains much more caffeine than espresso - this is all due to its much
larger serving size - that is 8oz vs 1oz.
Obviously
since espresso is served in much smaller volumes, we see less caffeine (from a
beverage perspective).
But when
viewed from a volume perspective
- espresso has a much more
caffeine than drip coffee.
The Bottom Line
So does
espresso really have more espresso than drip? Well the answer really depends on
your perspective. If we look at this issue:
- from a beverage perspective - drip
coffee has more caffeine.
So why do most people believe espresso has more
caffeine than regular?
Well, part
of the reason this belief has continued to exist is because caffeine itself an
intensely bitter compound. Since espresso is roasted at a much darker roast
which creates a higher concentration of 'bitter' molecules - the logical
"connection" would seem correct - but it is in fact incorrect.
The bitter
compounds that arise from darker roasts is not due to more caffeine, but rather
bitter compounds created during the Maillard reaction.
It is this
much lower concentration of caffeine (per serving) in espresso that allow
Italians to drink upwards of 10 to 12 espresso's per day without getting overly
jittery. Try drinking a dozen 12 oz cups of drip coffee and you'll likely end
up with a visit to the hospital from excessively high levels of caffeine in
your system.
Unfortunately
its very difficult to "standardize" the caffeine of coffee beverages
since there are numerous variables need to be considered, including:
- Beverage
Size - are
we comparing a cup at 4oz, 5 oz, 12oz or 24oz?
- Blends - many roaster create their
own blends of various beans each with subtle difference in caffeine
content.
- Bean
Type - is
the blend 100% arabica, robusta or both?
- Grind - was the coffee prepared with
a fine grind, ultra fine grind, coarse, etc?
- Water
Temp - was
the coffee prepared with the recommended 195-205F temperature range?
- Milk - was milk added or now - as
this will dilute the caffeine content per ml.
- Others
-
machine type, dwell time, etc.
All these
factors make the calculation of caffeine in coffee beverages a real challenge.
Hopefully with the implementation of industry standards by trade organizations
we can begin the journey towards creating more standardized cups of coffee in
our industry.
So, there you have it. While God's express will is definitely like a normal cup of coffee, it is NOT like an espresso cup of coffee. It all depends on the caffeine content.