Put the yeast in a small bowl and dissolve it in half a dl of the water. Stir it until you have a smooth mass. Mix the flour and salt in a batter bowl. Make a small hole in the middle and pour the yeast mass in it. Add the oil and the rest of the water. Mix the pizza dough into a cohesive mass that releases from the bowl. If the dough is too sticky, add some flour. Cover the bowl with a tea towel and let the dough rise for about 1 hour. Now the dough is ready to use. With this quantity we make 6 to 8 thin, small pizzas.