In a large bowl, mix flour, sugar, and salt together.
Add cold butter and mix until crumbly.
In a separate bowl, dissolve yeast in cold water.
Combine the wet and dry ingredients to form a dough.
Knead the dough lightly and refrigerate for 30 minutes.
Roll out the dough into a rectangle on a floured surface.
Fold the dough into thirds, like a letter, and refrigerate again.
Repeat the rolling and folding process two more times.
Cut the dough into triangles and place chocolate chips on each.
Roll each triangle from the base to the tip and shape into a croissant.
Brush with egg wash and bake at 375°F (190°C) for 20-25 minutes.