A North American native, the blue/purple Concord grape was developed by a transcendental fellow named Ephraim Wales Bull in Concord, Massachusetts. Working with seeds from native wild grapes, Bull experimented, and after planting 20,000 cuttings, he finally claimed success in 1853 by winning a grape competition at the Boston Horticultural Society.
According to the history posted at The Concord Grape Association, Mr. Bull never harvested much financial success for his efforts. " He sowed--others reaped," is apparently carved on his tombstone.
That said, I bought some delicious C. grapes this morning at the growers market and recalled my mother explaining to me back in the day--I was 5?--how to eat them. Pop the grape in your mouth, squeeze it open with your teeth, swallow the juice and the gooey center containing the seeds, and spit out the skin. Today I decided to research that notion--just checking, Mom!--and found that some people do that, some chew the gooey middle and spit out the seeds, some like the combo of juice and tangy skin, etc etc. Methods to suit all tastes.
Chewing or not chewing the center is akin to the oyster dilemma. It was my Dad who taught me about sliding the oyster off the shell and into the mouth, there to be chewed lightly if you were him, or swallowed whole in all its sea watery-chilled goodness, if you were me, and 11.
Now that I have come of age, I ,too, chew my oysters, lightly, and also chew my Concords, maybe every other time.
( Bull's first Concord grapevine, courtesy USDA.