al naturale significa in inglese

plain [plainer, plainest]▼(unseasoned)
adjective
[UK: pleɪn] [US: ˈpleɪn]

unseasoned▼(not sprinkled with seasoning)
adjective
[UK: ˌʌn.ˈsiːz.n̩d] [US: ˌʌn.ˈsiːz.n̩d]