un connaisseur, (from old French 'connoisseur')
The spelling, from French, is connoisseur (an aficionado, expert, or knowledgeable person).
"un grand connaisseur de ballet" or "un grand amateur de ballet"
The correct spelling (from French) is connoisseur, a knowledgeable expert, as in food.
French are known to be connoisseur of food and drinks. French food is distinctively marked by subtle herbs, olive oil and mild spices.
"He frequented the best restaurants and was a connoisseur of fine wines."
Connoisseur is a noun.
Connoisseur is a noun.
Connoisseur is a noun.
Mr. Ghirardelli is a chocolate connoisseur.
I wonder if you are thinking of gourmet which means a connoisseur of good food.
a connoisseur of modern art.
The Connoisseur - newspaper - ended in 1756.