Mix the flour, instant yeast, and salt for the rolls in a large mixing bowl. Then add the olive oil and the water for the dough. Knead by hand until a soft dough firms or use a kitchen machine and let the machine knead the dough for you.
Once a smooth, non-sticky dough forms (you might have to add more water or more flour), cover it with a clean kitchen towel and let it sit until it doubles in size (about 1-2 hours).
Preheat the oven to 480 °F / 250 °C.
Cut the dough in eight equal pieces and form the rolls.
In a pot, heat the water for the water bath and add in the baking soda. Place one roll after another in the hot baking soda water bath with the top side down and let it simmer in there for about half a minute to a minute. Then put them on a baking sheet lined with floured parchment paper.
Carve the surface of the dough lightly with a knife and add the poppy and sesame seeds on top.
Bake the bread in the oven for about 20 minutes and take it out once the surface is wonderful golden. You can knock on the bottom of the bread and when it sounds hollow it's done!