CREATE TABLE table_26461 ("Overall Episode #" FLOAT, "Original airdate" CLOB, "Iron Chef" CLOB, "Challenger" CLOB, "Challenger Specialty" CLOB, "Theme Ingredient" CLOB, "Winner" CLOB)

What episode number originally aired on November 21, 1993?
SELECT MAX("Overall Episode #") FROM table_26461 WHERE "Original airdate" = 'November 21, 1993'
SELECT MAX("Overall Episode #") FROM "table_26461" WHERE "Original airdate" = 'November 21, 1993'