The availability and affordability in obtaining sufficient quantity of food is an important indicator of food security. Food is one of the problem in agricultural sector. Every province in Indonesia mostly still depends on rice consumption. This shows that consumption patterns of carbohydrate sources are still not diverse. One effective strategy to achieve food security is to develop food diversification. This study aimed to analyze consumption patterns and the level of diversification of carbohydrate as food sources and analyze the difference of income and food price in affecting carbohydrate diversification as food sources on food secure and insecure provinces. This study utilized SUSENAS data and analyzed them using index of Berry and Linier Approximation Almost Ideal Demand System (LA AIDS). This study found that the level of income and the level of food diversification in food-secure province is higher than in food-insecure province. In addition, price change in carbohydrate sources has been proven to be more influential on the food demand in food insecure province.

The problem of national food security could not be resolved if the problems at the lowest level (household) did not resolved. One of the effective strategy to achieve food security was increasing food diversification. This study compared the patterns of consumption and the level of diversification of household food among provinces that were resistant to food insecurity. This study used National Socio-Economic Survey (Survei Sosial Ekonomi Nasional/SUSENAS) data from Statistic Indonesia and analyzed using the Berry index and the Almost Ideal Demand System (LA / AIDS) model. This study found that the level of income and the level of food diversification in food secure province (East Kalimantan) were higher than those in food insecure province (East Nusa Tenggara). The patterns of household food consumption in East Nusa Tenggara province was more influenced by changes in income, while East Kalimantan was subject to price changes.