Sahih Bukhari

Narrated Khalid bin Al-Walid:""A roasted mastigure was brought to the Prophet (ﷺ) who stretched his hand towards it to eat it. But it was said to him, ""It is a mastigure."" So he withdrew his hand. Khalid asked, ""Is it unlawful to eat?"" the Prophet said, ""No, but it is not found in the land of my people and that is why I do not like eating it."" So Khalid started eating (it) while Allah's Messenger (ﷺ) was looking at him. An-Nadr said: 'Al-Khazira' (is prepared) from bran while 'Al-Harira' is prepared from milk