At 00:45 I should say tablespoon not teaspoon! This video demonstrates making wheat flour #paste as a bookbinding #adhesive. Until recently I used refined starch to make paste for all my bookbinding paste needs. Starch paste is considered the gold standard for paper repair. However, not everyone has easy access to refined starch so I was exploring the use of flour for paste as a way to make bookbinding more accessible. In the process I discovered in the excellent book by Kathy Abbott the advice that flour paste is superior, compared to pure starch paste, for bookbinding due to the greater strength obtained due to the gluten. Pure starch paste remains the recommended paste for paper repair. I have started using wheat flour paste for leather binding.