The Collaborative International Dictionary of English v.0.48:
Soupcon \Soup`[,c]on"\, n. [F.] A suspicion; a suggestion; hence, a very small portion; a taste; as, coffee with a soup[,c]on of brandy; a soup[,c]on of coquetry. [Webster 1913 Suppl.]WordNet (r) 3.0 (2006):
soupcon n 1: a slight but appreciable amount; "this dish could use a touch of garlic" [syn: touch, hint, tinge, mite, pinch, jot, speck, soupcon]