Gado-gado is a traditional dish in Indonesian cuisine and comprises a vegetable salad with a brown sauce dressing. This cuisine is very suitable for vegetarian (egg doesn't count) because it's contains no meat.
There are many different types of gado-gado. Surabayan gado-gado is one of them. It's ingredients are: rice cake, sliced hard-boiled egg, boiled potato, beansprouts, lettuce leaves, cucumber, cabbage, fried tofu, kerupuk, and emping. Sometimes it's served with other vegetables like tomato.
The brown sauce that mention above is made of peanut and coconut milk(santan) and the tastes is sweet.

pic taken from : http://upload.wikimedia.org/wikipedia/commons/thumb/a/a2/Gado_gado.jpg/800px-Gado_gado.jpg