Crumble the yeast in the warm water, add the sugar and stir everything well.
When the yeast has dissolved, add this mixture to the flour and stir gently with a fork so that a mushy pre-dough is formed. Let stand briefly covered.
Meanwhile, de-oil the tomatoes on paper towels and chop them finely. Add to the pre-dough mixture together with the salt and oil and immediately work everything into a smooth dough with the dough hook. If you like, knead in some basil. Cover the dough and let rise in a warm place or in a warm water bath for about 45 minutes.
Then shape into a long dough roll on a well-floured work surface or, for ciabatta rolls, roll out finger-thick and cut into squares. Cover again and let rise for another 20 minutes.
In the meantime, preheat the oven to 200 ° C top / bottom heat.
Either dust the ciabatta thinly with flour or, if you want a smooth surface, brush with beaten egg. Bake in the preheated oven for about 20-25 minutes, the rolls for about 15-20 minutes.