My mother brewed after-dinner coffee in a percolator-- electric, not stove-top, so it got pretty hot-- that my parents got as a wedding gift, and served it in demitasse cups.
The percolated coffee (as brewed by my mother) had a very full flavor that was not as bitter as drip coffee, and frankly, since that percolator gave up the ghost around the year 2000 (an impressive life span, really; my parents were married in 1963-- but my mother hauled the thing out only for guests-- it was programmable auto-drip for ordinary days), and I have not had anything that compares to it, not even from a restaurant or Starbucks.
Anyway, I’ve a feeling that it didn’t have as much caffeine by volume as drip coffee. Caffeine is very bitter, which is why, to me, it tasted a lot better.
I used the percolator just a few times in my life, but you have a lot of control over what the coffee tastes like because you can control the temperature of the water and the time the coffee percolates, as well as the amount of water and grounds. With drip, you control just the last two.
Using a percolator was a special skill. If you remember the commercials where some people just couldn’t make coffee, what they couldn’t do was use a percolator-- well, and as it turned out, weren’t buying Folger’s, or whatever. But some people were great with percolators, and some were not. I imagine people good with controlling the flavor could control the caffeine content somewhat as well.
Then, there were the demitasse cups. They hold only 6ozs. They are in my kitchen now, and I just measured. The regular breakfast cups hold 8 ozs. My mugs hold 12 - 20 ozs, with 16 being typical.
There are 2 pots with the dishes; my mother decanted the percolated coffee into one, and made tea in the other (the pots looked different, and it was always clear to everyone which was tea and which was coffee without being told).
People served themselves what they wanted, and could pour just a very little, or could pour maybe 4ozs leaving room for cream & sugar. But if they wanted more than 6ozs, they needed a second cup.
Culture was different then, and so were laws. (My parents’ peak dinner party years were about 1978-1982, but the bell curve extended from 1964 to about a year before my father died in 1998-- come to think of it, it was more of a parabola..) They started around 5:30 with mixed drinks, hors d’oeuvres & nuts (the nuts were extremely important, for some reason) in the living room. My parents didn’t smoke, but they put out ashtrays.
There was wine at dinner. Usually about a bottle per 3 people.
I was occasionally at these dinner parties as a teenager. I’d fill a seat if there was a last-minute cancellation, but those were rare.
There were no designated drivers, and everyone was driving home. No one was driving far, but still, they might have all liked a small shot of caffeine for the road that wasn’t enough to keep them awake all night after being social for hours, having a big meal, a mixed drink, and a few glasses of wine. Just enough to perk them up for the drive home.
For all I know, that was the reason for the coffee custom in the first place.
I think less alcohol is served at gatherings to begin with-- and beer is more common than mixed drinks. Sit-down, suit & tie dinner parties aren’t so common, designated drivers are VERY common, and so is taking an Uber. Calling a cab to go home from a dinner party because you’d had a few glasses of wine with a big meal over several hours would have been bizarre in 1978.
Also, my parents weekday dinner parties used to break up around 10pm. People arrived 5:30 - 6:30, dinner began around 7pm, dessert was around 8:30, and people started leaving at 10.
Weekday nonetheless, a lot of parties will go on until midnight now. A small coffee at 9:30 is a lot different from a small coffee at 11:45.
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