Measure the water in a shatter-proof beaker and microwave for 30 seconds. It should be slightly warm to the touch.
Add the yeast and milk powder and stir to combine.
Place 3 1/2 cups flour in the bowl of a food processor fitted with a steel blade.
Add the salt, olive oil, and wine, and pulse 5 times to combine.
With the motor running, add the water/yeast mixture through the feed tube in a steady stream, but do it quickly so the flour doesn’t have a chance to clump.
Once all the ingredients are combined, process for an additional 30 seconds until it has formed a smooth and shiny ball around the blade.
Spread the remaining 1/4 cup flour on your board or countertop, and knead the dough for a minute or so to absorb just the right amount of extra flour. Make a smooth ball,
Oil a large mixing bowl. Place the dough ball rounded side down into the oil, then turn. Cover the bowl with plastic wrap and place in a warm, draft-free place and allow to triple in volume - 2 to 2 1/2 hours.
Meanwhile, brush the bottom of a 12-inch by 18-inch jelly roll pan with olive oil. When the dough has tripled, spread it evenly in the pan to create a rectangle. Use the palms of your hand, as fingertips can easily tear the dough.
Brush the top of the dough lightly with olive oil, then cover with plastic and allow to rise/rest again for 30 minutes. Set the oven rack to the bottom third, and preheat to 400°F.
When the dough has finished its final rise, poke it all over with your fingers to create little dimples, then drizzle with olive oil.
Spread the oil gently with a brush, but leave the oil in the dimples.
Sprinkle evenly with the rosemary and salt, and bake in the oven for 20 minutes, or - as the recipe states - until golden.