Herring and green bean pizza

From these ingredients, prepare yeast dough, roll out and put on a baking sheet. Peel the potatoes, cut into circles and put in an even layer on the dough. Finely chop the herring and onions and place on top of the potatoes. Blanch the beans in boiling water, dry, cut and put on a pizza. Grease the pizza with mayonnaise on top. Bake for 20-25 minutes in the oven, preheated to 200 degrees.