Black Olive Sandwich Rolls

INGREDIENTS

4 cups

all-purpose flour (1 pound, 1 ounce, by weight)

2 cups

semolina flour (11½ ounces, by weight)

3 tsp

SAF or instant yeast

3 tsp

kosher salt

2 tbsp

sugar

4 tbsp

extra virgin olive oil

2 cups

lukewarm water (16 ounces, by weight or volume)

1 1/2 cups

pitted oil-cured or kalamata olives (broken up coarsely with your hands)

1/2 cup

water

1/2 tsp

cornstarch