The Sinhalese (Sinhala: siNhl jaatiy Sinhala Jathiya, also known as Hela) are an Indo-Aryan-speaking ethnic group native to the island of Sri Lanka. They constitute about 75% of the Sri Lankan population and number greater than 16.2 million. The Sinhalese identity is based on language, historical heritage and religion. The Sinhalese people speak the Sinhalese language, an Indo-Aryan language, and are predominantly Theravada Buddhists, although a small percentage of Sinhalese follow branches of Christianity.

Sinhalese cuisine is one of the most complex cuisines of South Asia. Due to its proximity to South India, Sinhalese cuisine shows some influence, yet is in many ways quite distinct. As a major trade hub, it draws influence from colonial powers that were involved in Sri Lanka and by foreign traders. Rice, which is consumed daily, can be found at any occasion, while spicy curries are favourite dishes for lunch and dinner. Some of the Sri Lankan dishes have striking resemblance to Kerala cuisine, which could be due to the similar geographic and agricultural features with Kerala. A well-known rice dish with Sinhalese is Kiribath, meaning "Milk Rice." In addition to sambols, Sinhalese eat "Mallung"- chopped leaves mixed with grated coconut and red onions. Coconut milk is found in most Sri Lankan dishes to give the cuisine its unique flavour.  Sri Lanka has long been renowned for its spices. The best known is cinnamon which is native to Sri Lanka. In the 15th and 16th centuries, spice and ivory traders from all over the world who came to Sri Lanka brought their native cuisines to the island, resulting in a rich diversity of cooking styles and techniques. Lamprais rice boiled in stock with a special curry, accompanied by frikkadels (meatballs), all of which is then wrapped in a banana leaf and baked as a Dutch-influenced Sri Lankan dish. Dutch and Portuguese sweets also continue to be popular. British influences include roast beef and roast chicken. Also, the influence of the Indian cooking methods and food have played a major role in what Sri Lankans eat.  The island nation's cuisine mainly consists of boiled or steamed rice served with curry. This usually consists of a "main curry" of fish or chicken, as well as several other curries made with vegetables, lentils and even fruit curries. Side-dishes include pickles, chutneys and "sambols". The most famous of these is the coconut sambol, made of ground coconut mixed with chili peppers, dried Maldive fish and lime juice. This is ground to a paste and eaten with rice, as it gives zest to the meal and is believed to increase appetite. Answer this question using a quote from the following article:

What did they makes
chopped leaves mixed with grated coconut and red onions.