Put the flour in a bowl and make a well. Spoon in the yeast and add 100 g of warm water. Have a coffee and wait 15 minutes. Add the rest of the water and the salt and knead well for 10-15 minutes, until the dough is elasticy and stretchy. Pop it back in the bowl, cover it, and let it rise for 1-2 hours or until is has doubled in size. Alternatively put it in the fridge over night.
Pull the dough out of the bowl and divide it into equal pieces of about 75 grams. Roll these into tight little balls and put them on a baking tray that you have lined with parchment. Space them about 1 inch apart. Cover with a cloth and let rise again for about 1 hour.
Spray with water and sprinkle with seeds. Bake in a preheated 230 degree celcius oven for 15 minutes or so. If you tap the bottoms of the rolls they will sound hollow. Cool completely if you can!