CONCOCT

[verb] [T] - to make (something, usually food) by adding several different parts together, often in a way that is original or not plannedHe'd concocted the most amazing dish from all sorts of unlikely ingredients.If you concoct an excuse, explanation or story you invent one to deceive someone.He concocted a story about working late at the office, but I knew he was going drinking with his brother.