Although aquafaba is best if homemade using the recipe provided in the book, you can use aquafaba from canned chickpeas. Use the organic, low-sodium, canned chickpeas and strain off the liquid into a measuring cup using a fine mesh strainer. Note the amount of liquid you acquired, then add it to a medium saucepan and bring to a boil. Reduce to a simmer and cook until the liquid reduces by ⅓. Cool the aquafaba completely before using.
From Aquafaba, copyright © 2016 by Zsu Dever. Used by permission.