I know of commercial product Egg Replacer though use it sparingly.
I've used Apple Sauce and Bananas in the past.
What else is there?
My sister was experimenting with a recipe she wanted to make vegan friendly and met disaster.
She want's to replace an egg in a recipe that uses only one egg to rise. When using commercial egg replacer it game out gritty and didn't rise at all. I suggested that perhaps she didn't use the right amount of egg replacer.
What do you folks think? I haven't tried the recipe she's attempting myself so it could have been a simple error on her part and may come out as a success next time.
She's trying to make a Vegan Chocolate Souffle