Soto ayam is a yellow spicy chicken soup with lontong or nasi himpit or ketupat (all compressed rice that is then cut into small cakes) and/or vermicelli or noodles, it is from indonesia. Turmeric is added as one of its ingredients to get yellow chicken broth. It is probably the most popular variant of soto, a traditional soup commonly found in indonesian cuisine. Besides chicken and vermicelli, it can also be served with hard-boiled eggs, slices of fried potatoes. Occasionally, people will add "Koya", a powder of mixed prawn crackers with fried garlic or orange colored spicy sambal, krupuk or emping is a very common topping.