Food scientists taste samples of rice to make sure they fit Egyptian standards, in a research centre affiliated with Egypt's agriculture ministry in Cairo, Egypt, March 25, 2019. Picture taken March 25, 2019.

A lab technician hands a taster a plate of rice for a taste test to make sure it fits Egyptian standards, in a lab in Cairo, Egypt, March 25, 2019. Picture taken March 25, 2019.

Samples of cooked rice are displayed for testing by food scientists to make sure they fit Egyptian standards, in a research centre affiliated with Egypt's agriculture ministry in Cairo, Egypt, March 25, 2019. Picture taken March 25, 2019.

Food scientist taste samples of rice to make sure they fit Egyptian standards, in a research centre affiliated with Egypt's agriculture ministry in Cairo, Egypt, March 25, 2019. Picture taken March 25, 2019.

Food scientists prepare samples of rice before a taste test to make sure they fit Egyptian standards, in a research centre affiliated with Egypt's agriculture ministry in Cairo, Egypt, March 25, 2019. Picture taken March 25, 2019.

A food scientist tastes samples of rice to make sure they fit Egyptian standards, in a research centre affiliated with Egypt's agriculture ministry in Cairo, Egypt, March 25, 2019. Picture taken March 25, 2019.

Food scientists taste samples of rice to make sure they fit Egyptian standards, in a research centre affiliated with Egypt's agriculture ministry in Cairo, Egypt, March 25, 2019. Picture taken March 25, 2019.

Samples of cooked rice are displayed for testing by food scientists to make sure they fit Egyptian standards, in a research centre affiliated with Egypt's agriculture ministry in Cairo, Egypt, March 25, 2019. Picture taken March 25, 2019. REUTERS/Mohamed Abd El Ghany