Simplify the following text for a Grade 6 native English-speaking person.
Original: Sichuan pepper is one of the few spices important for Nepali ( Gorkha ) , Tibetan and Bhutanese cookery of the Himalayas , because few spices can be grown there .
Simplified: Sichuan pepper is one of the few spices which are important for Tibetan and Bhutanese cookery of the Himalayas . This is because few spices can be grown there .