Qur'anic education is now regulated. Culture Cuisine The cuisine of Somalia, which varies from region to region, is a mixture of diverse culinary influences. It is the product of Somalia's rich tradition of trade and commerce. Despite the variety, there remains one thing that unites the various regional cuisines: all food is served halal. There are, therefore no pork dishes, alcohol is not served, nothing that died on its own is eaten, and no blood is incorporated. Qaddo or lunch is often elaborate. Varieties of 'bariis' (rice), the most popular probably being basmati, usually act as the main dish. Spices including cumin, cardamom, cloves, cinnamon and garden sage are used to add aromas to these different rice dishes. Somalis serve dinner as late as 9 pm. During Ramadan, the evening meal is often presented after Tarawih prayers; sometimes up to 11 pm. 'Xalwo' (halva) is a popular confection reserved for special festive occasions, such as Eid celebrations or wedding receptions. It is made from corn starch, sugar, cardamom powder, nutmeg powder and ghee. Peanuts are also sometimes added to enhance texture and flavour. After meals, homes are traditionally perfumed using frankincense () or incense (), which is prepared inside an incense burner referred to as a dabqaad. Music Somalia has a rich musical heritage centred on traditional Somali folklore. Most Somali songs are pentatonic. That is, they only use five pitches per octave in contrast to a heptatonic (seven note) scale like the major scale. At first listen, Somali music might be mistaken for the sounds of nearby regions such as Ethiopia, Sudan or the Arabian Peninsula, but it is ultimately recognizable by its own unique tunes and styles. Somali songs are usually the product of collaboration between lyricists (), songwriters () and singers ( or "voice"). Literature Somali scholars have for centuries produced many notable examples of Islamic literature ranging from poetry to Hadith. With the adoption of the Latin alphabet in 1972 as the nation's standard orthography, numerous contemporary Somali authors have also released novels, some of which have received worldwide acclaim. Of these modern writers, Nuruddin Farah is the most celebrated. Books such as From a Crooked Rib and Links are considered important literary achievements, works that have earned Farah, among other accolades, the 1998 Neustadt International Prize for Literature. Faarax M.J. Cawl is another prominent Somali writer who is best known for his Dervish era novel,