Prepare the yeast: Mix instant yeast with warm water and let it sit for 5 minutes. This will activate the yeast and get it ready to use in the recipe.
Knead the dough: Combine the yeast mixture, flour, sugar, and salt in the bowl of a stand. Knead the dough for 6 minutes on low speed and then 8 minutes on medium speed in a stand mixer. (the dough should be a little sticky at this stage.)
Sprinkle some flour on your work surface. Take the dough out of the bowl, dust it with flour, shape it into a ball, cover it with a napkin. Then, let it rise for about 30 minutes until it doubles in size.
Shape the bolillos: Divide the dough into 8 equal pieces of about 3.5 - 4 Oz (100 grams). Roll out and leave to rest for 15 minutes (to make it easier to shape). Shape the dough into a bolillo shape (like in the pictures above) and place it on a baking sheet lined with parchment paper.
Repeat with the remaining dough. Cover again with a napkin or kitchen towel and let the bolillos rise for 45 minutes.
Create the steaming oven: After letting the dough rise for about 30 minutes. Place a baking tray filled with 2 cups of water on the bottom rack of your oven.
Preheat the oven to 480°F (250°C).
Bake: Spray or wash the bolillos with water. Place them in the oven and bake for 10 minutes at 480°F (250°C), then 5 minutes at 350°F (170°C).