These are "Sosis Solo" or "Sausage from Solo", a kind of finger food or snack. Solo itself is a city in Central Java and this food is adapted from the recipe of Kasunanan Surakarta (Surakarta Royal Palace). The name "sosis" or "sausage" is used because the shape of this food is similar to sausage.

If you have time to visit Solo, you might want to visit Hisjman, a famous restaurant that sells Sosis Solo since the Dutch colonialism era. Or else, simply call Ceplok Telor at 021-9063-3113.