African cuisine encompasses within its fold several nations, including Morocco, Algeria, Libya, Tunisia, Egypt and Sudan. The roots of North African cuisine can be traced back to the ancient empires of North Africa, particularly in Egypt, where many of the country's dishes and culinary traditions date back to antiquity. Over several centuries traders, travelers, invaders, migrants and immigrants all have influenced the cuisine of North Africa. The Phoenicians of the 1st century brought sausages, while the Carthaginians introduced wheat and its by-product, semolina. The Berbers adapted semolina into couscous, one of the main staple foods. Olives and olive oil were introduced before
Steaming preferring to avoid additional fat intake may prefer steaming to methods which require cooking oil. A 2007 USDA comparison between steaming and boiling vegetables shows the most affected nutrients are folic acid and vitamin C. When compared to raw consumption, steaming reduces folic acid by 15%, and boiling reduces it by 35%. Steaming reduces vitamin C by 15%, and boiling reduces it by 25%. Steaming, compared to boiling, showed 42% higher amount of glucosinolates in broccoli cooked for medium firmness. Phenolic compounds with antioxidant properties have been found to retain significantly better through steaming than through boiling or microwaving. Steaming