We have no meanings for "concoct so" in our records yet.
1 I had concocted so many, and so few had come to fruition.
2 He could not even think of one of those fine phrases which nowadays he usually concocted so easily.
3 A wacky plan is concocted so that Nai Nai's family can return to China to say goodbye without arousing her suspicion.
4 Savedra wanted to scream, to laugh until she wept; her mother and Thea Jsutien between them couldn't have concocted so clever a scheme.
5 "Is it possible, sir," he began, in lucid Johnsonian, "that you can concoct so delicious an entree in so few minutes?
Grammar, pronunciation and more