Knead the dough: Place the water, salt, all-purpose flour and dry yeast in the bowl of the mixer and knead at low speed for 1-2 minutes until the dough becomes consistent. Then add olive oil, increase to 2nd speed and continue kneading for 5-6 minutes.
Dust a baking mat or work surface with flour, then transfer the dough from the bowl to the mat, Roll it into a cylinder shape, cover it with a napkin, and let it rise for 10 minutes.
Divide the dough into small 7-ounce (20 grams) pieces, roll it out, cover it with a napkin, and let it rise for another 10 minutes.
Sprinkle the sesame seeds on a baking sheet or work surface. Line two baking sheets with parchment paper. Preheat the oven to 390 degrees Fahrenheit (200 Celsius). Fill a small bowl with water (this may be necessary to make it easier to cover the topping.)
Shape and toppings: Take a ball, and gently roll it into a cylindrical shape roughly the size of the palm of a hand. Roll it in the sesame seeds and continue rolling it until it is about 7 inches in length (20 centimeters), making sure to coat it with the seeds (if necessary, wash rolls with water and coat with seeds). Then place it on the baking sheet.
Repeat to make the other toppings. When done, cover the baking sheet with a napkin and let the dough rise for 10-15 minutes.
Bake: Spray the grissini dough with water (not too much, just a bit), place it in the oven and bake for 15 to 20 minutes at 390°F until golden brown.