BOOKBINDER'S PASTE
1 tsp. flour
2 tsp. cornstarch
1/4 tsp. alum (powdered)
1/3 c. water
Mix dry ingredients. Add water slowly, stirring out lumps. Cook in a double boiler over low heat, stirring constantly. Remove from heat when paste begins to thicken; it will harden more as it cools. Keep covered. Thin with water when necessary.