السويق
A drink or paste made from roasted, ground wheat or barley mixed with water, used as a light, quick-to-prepare food.
دَعَا رَسُولُ اللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ بِسَوِيقٍ فَلُتَّ، فَشَرِبَ وَشَرِبْنَا، ثُمَّ قَامَ إِلَى الْمَغْرِبِ فَمَضْمَضَ وَتَمَضْمَضْنَا، ثُمَّ صَلَّى وَلَمْ يَتَوَضَّأْ
“The Messenger of Allah ﷺ called for sawiq, which was mixed and drunk by him and those with him; he then rinsed his mouth for the sunset prayer without performing a fresh ablution.” (meaning, not a literal translation)
The detail about not repeating ablution afterward is actually a separate point of fiqh embedded in the same narration — establishing that consuming sawiq (unlike some other foods discussed elsewhere in the hadith corpus) doesn't break one's existing state of purity, a detail scholars extract from this account beyond its dietary content.
Ibn al-Qayyim notes sawiq's convenience as a portable, easily digested travel food — a precursor to the general category of roasted-grain drinks still consumed across the region today. He groups it with talbina and other grain-based preparations as light, quickly-prepared foods suited to travel or times when a full meal wasn't practical.
Roasted grain drinks similar in concept to sawiq remain common across parts of the Middle East, South Asia, and North Africa today, and are recognized in modern nutrition as an easily digestible source of carbohydrates and some fiber, depending on preparation.