What is the meaning of concoction?

noun

• Any foodstuff made by combining different ingredients.
  • usage: "he volunteered to taste her latest concoction"; "he drank a mixture of beer and lemonade"
  • synonyms: mixture, intermixture
• An occurrence of an unusual mixture.
  • usage: "it suddenly spewed out a thick green concoction"
• The invention of a scheme or story to suit some purpose.
  • usage: "his testimony was a concoction"; "she has no peer in the concoction of mystery stories"
• The act of creating something (a medicine or drink or soup etc.) by compounding or mixing a variety of components.
  • synonyms: confection