flour

“They take flour, sugar, oil, tahini, and then they go and sell them to the starving people at astronomical prices!” he later wrote on Facebook.

"Some students come from homes with no bread, no flour, no milk, no oil, nothing at all," the teacher says.

“The ‘rub in’ method is basically with your hands so that you can actually feel the butter going into the flour.

She added that a trader in Khan Younis's main market said demand for flour, oil and sugar had surged within hours.

Yams are also a prized ingredient in Nigerian cuisine -- fried, boiled, mashed or turned into flour.