A conducted research on carbohydrate and vegetable consumption in Solo city households revealed that of 275 families spread across 11 urban villages in 5 districts eat 3 - 4 times a day in 2017. Three main staple foods are regularly consumed: rice, boiled bananas and white bread. About 90% of respondents in Solo city consumed 292.18 grams of rice or equivalent of 150 grams of rice per day. Nearly all of the respondents (98.9%) cooked their rice.
It was estimated that rice leftovers cooked at home were about 100 grams, and 20 grams of rice leftovers bought from the outside. The management of leftover foods has been good as they were made into animal food, and some were processed into other dishes such as fried rice, rice crackers and cakes.
Karak, a rice cracker, is one of the favourite snacks in Solo city. People usually eat it along with rice and serve as a side dish. There is a saying that eating is not complete without being accompanied by a cracker. Karak is also a special souvenir of Solo city.
Although carbohydrate leftovers have been reprocessed into other types of food, many home-based businesses and other processed food remain using banned food additives such as borax, artificial dyes and artificial flavours. Thus, to improve the knowledge and skills of home-based entrepreneurs, medical service staff, orphanage workers and young people in processing leftover food, a food-reprocessing workshop must be organised.