The Blintz Fold is a sequence of folds which form what can be imagined to be pastry with the four corners folded in towards the middle. It is not clear how the name came about but we do know that the origami blintz fold is seen in early European paper folding (such as in the making of pajarita, a famous Spanish “little bird”).
Instructions to Make the Blintz Fold
Start with a square sheet of paper with the white-side facing up.
Fold and unfold along the diagonals in both directions to get an X crease.
Fold and unfold the paper in half (horizontally and vertically) to get a + crease.
Fold the corner of the paper to the middle of the paper (red dot to red dot). Do this for all 4 corners.
This is a common sequence of origami folds: