When the flames from the fire subside and the coals are covered in a thick layer of gray ash, about 15 minutes, arrange half of the coals in an even bed.

Combine warm water, sugar, and yeast in a small bowl.Let stand until foamy, about 10 minutes.

Add 1/4 cup oil to yeast mixture, and stir to combine.. Stir together 3 1/4 cups flour and 2 1/2 teaspoons salt in a large bowl, and make a well in center of dry ingredients.Pour yeast mixture into well and gradually incorporate with a wooden spoon.When mixture becomes too stiff to stir and forms a shaggy dough, transfer to a lightly floured surface and begin kneading by hand, adding up to remaining 5 tablespoons flour, 1 tablespoon at a time, if dough is too sticky.

Knead until dough is soft and elastic, about 10 minutes.Grease a large bowl with oil, and place dough in bowl, turning to coat.

Cover with plastic wrap, and let rise in a warm place until doubled in size, about 1 hour.. Make the filling:.

Coarsely chop spinach.10 parts per billion (ppb) for fruits, vegetables (excluding single-ingredient root vegetables), mixtures (including grain- and meat-based mixtures), yogurts, custards and puddings, and single-ingredient meats.

20 ppb for single-ingredient root vegetables.20 ppb for dry infant cereals.

The FDA importantly noted that the levels are not "zero" because lead and other contaminants can naturally occur in the air, water, and soil, which produces the fruits, vegetables, and grains used in these products.But, "Because the very young are more vulnerable to adverse health effects associated with exposure to contaminants, we prioritized reducing exposure from foods commonly consumed by young children."