Pour the warm water into a small bowl and add the yeast with the pinch of sugar.
Set aside.
In a standing mixer, blend eggs, the cup of sugar, the salt, and warm milk.
Add the flour, rehydrated yeast, and butter until fully incorporated.
It is a wet dough and will be sticky.
Knead the dough for five minutes.
et it proof (rise) until it has doubled in size. This will take 1 1⁄2 to 2 hours.
Preheat the oven to 325 degrees.
Dust the countertop with flour and knead the dough for another three minutes.
After kneading, shape the dough into discs about three inches in diameter.
Place them on a parchment- paper- covered baking sheet.
Cover them with a cloth and let them rise for 1 1⁄2 to 2 1⁄2 hours.
Using a large frying pan, cook the bolos over medium-low heat for a few minutes until lightly browned on both sides.
Transfer back to the baking sheet and bake in the oven for 10 to 12 minutes.