An oliebol is a traditional Dutch food. Oliebollen (literally oil balls) are traditionally eaten on New Year's Eve and at funfairs. Sometimes it is referenced in English as Dutch donut.
Oliebollen are a variety of donut made by using two spoons to scoop a certain amount of dough and dropping the dough into a deep fryer filled with hot oil. In this way, a sphere-shaped oliebol emerges.
The dough is made from flour, eggs, yeast, some salt, milk, baking powder and optionally some sultanas or currants or raisins and sometimes apple pieces and zest or succade. The dough needs time to rise for at least an hour. Oliebollen are usually served with powdered sugar.
They are said to have been first eaten by Germanic tribes in the Netherlands during the Yule, the period between December 26 and January 6. The Germanic goddess Perchta, together with evil spirits, would fly through the mid-winter sky. To appease these spirits, food was offered, much of which contained deep-fried dough. It was said Perchta would try to cut open the bellies of all she came across, but because of the fat in the oliebollen, her sword would slide off the body of whomever ate them.
In months November and December you'll find these stands all over the Netherlands.