What herb or spice begins with the letter 'X?

Answer 1

Xylopia aethiopica or Xylopia striata, also known as Sénégal Pepper, Negro Pepper, Grains of Selim, African Grains of Selim, Moor Pepper, Kili, Congo Pepper, Kani Pepper, Country Pepper, Selim Kili Pepper and Poivre de Sénégal) represents the fruit of