In a large deep bowl dissolve the yeast in 3 cups of water and let stand for about 10 minutes in a warm place.
In the bowl with the dissolved yeast stir in flour, oil, salt, and vinegar; mix well with your hands.
Knead at least 15 minutes by hand, or until dough is very soft and shiny.
Put the dough in a bowl, cover with a kitchen towel, and let rise 1 to 1 ½ hours. It should double in size. You can speed up the process by putting the bowl on top of a warm stove – I set my oven at 200, set the bowl of dough on the stove and the dough is done within 45 minutes.
Remove dough from bowl; punch a hole in the middle of the dough with your fist and knead the dough on a lightly floured surface for a few minutes.
Roll into a log and divide dough into 4 to 6 equal pieces.
Roll each piece into a ball and cover with plastic wrap.
Take each piece of dough and roll on a floured surface, rolling out to a size of a medium pizza.
Cut out triangles and roll each triangle into a croissant.
Place the croissants on a baking sheet sprayed with non-stick cooking spray.
Dissolve 1 teaspoon of salt in 3 tablespoons of water.
Brush each croissant with the water mixture.
Sprinkle the croissants with a bit of salt and top with sesame seeds.
Add small pieces of butter on top of each croissant.
Put the baking sheet in the oven and bake for 15 – 20 minutes or until golden brown.
Remove from oven and let cool 2 minutes.
Serve.
Notes
These freeze very well, up to 3 to 4 months. Before storing, allow croissants to completely cool on cooling racks. Store, tightly sealed, in Ziploc Bags.
Nutritional info is an estimate and provided as courtesy. Values may vary according to the ingredients and tools used. Please use your preferred nutritional calculator for more detailed info.