Aquafaba, the liquid found inside cans of chickpeas, is one of the best egg replacements around, so long as you get the ratios right. Use 3 tbsp of aquafaba for one egg, 2 tbsp for one egg white, and 1 tbsp for an egg yolk; if you're shaking aquafaba in a cocktail that calls for egg whites, one ounce of aquafaba per egg white is best.