Crumble the yeast in a bowl, add warm water and mix well.
Add the salt, flour and 2/3 of the sunflower seeds in the bowl and make a solid dough.
Put a plastic film and a baking over the bowl, and place it in a warm place for 8-10 hours.
Divide the dough in two. Make a big loaf with one part, and small round bread with the other part.
Put the bread on a baking sheet and let the rest one hour.
Put the bread on a baking sheet and let the rest one hour.
Start the oven at 250 degrees Celsius.
Brush the bread with water and sprinkle them with the rest of the sun flower seeds.
Place the bread in the middle of the oven for 20 minutes.
Take out the bread and let them cool down before serving them.