It isn’t actually an egg at all. It is just a simple mixture of ground* flax (or chia) seeds and water, which gel into an egg-like consistency.
Flax eggs are a popular substitute in vegan baking, and are a great alternative for anyone with allergies, too. Besides being easy to make and all-natural, the flax adds a bunch of healthy nutrients and omega-3 fatty acids, giving me an excuse to call whatever I’m making healthy.
*I purchased a small electric Braun coffee/spice grinder on eBay for about $10.00 several years ago. It is perfect for grinding flax seed and spices. Here is an inexpensive model that is well-rated from Amazon: https://www.amazon.com/Electric-CUSINAID-Stainless-Transparent-Capacity-n/dp/B07KH7TTTF/ref=sr_1_47?crid=2KAYO7XO2YXOY&dchild=1&keywords=small+coffee+grinder+electric&qid=1585098799&smid=A3MYUTU6E948MJ&sprefix=small+coffee+grinder%2Caps%2C538&sr=8-47
1 flax egg (equivalent to 1 regular egg)=1 Tbsp ground flax + 3 Tbsp water
1 chia egg (equivalent to 1 regular egg)=1/2 Tbsp ground chia + 3 Tbsp water
For more information, go to the link below:
https://www.willcookforfriends.com/2013/06/how-to-make-a-chia-egg-the-flax-egg-just-met-its-match-fak-friday.html