drying of sliced galangal alpinia galanga and sliced onion allium cepa var. aggregatum for using as ingredient in cooking

drying sliced galangal alpinia galanga onion allium cepa var aggregatum using as ingredient cooking food folk medicinen aroma asian background brown culture flavor flowering fresh health healthy herb herbal medicine natural organic plant raw rhizome root seasoning spice taste vegetable whose widely zingiber agriculture closeup cuisine dry macro nature nutrition pattern texture