No, it's not another of our April fool jokes! Microsoft's Bill Gates and Paypal's Peter Thiel really are plugging Vegan Eggs Here's what the Daily Mail said;
Not clear what plants are being used - Acorns?
"MailOnline was able to try two of Hampton Creek’s products - its mayonnaise, and cookies made using its baking product.
The results were surprising, if a little anticlimactic. Both tasted exactly as you would expect - and are indistinguishable from products made with real egg. The chocolate chip cookies we tried were excellent - crumbly, moist and with a feel in the mouth identical to a normal cookie. Crucially, they also look identical to a normal cookie - despite containing no egg.
Hampton Creek’s ‘Beyond Egg’ mayonnaise was also extremely similar to ‘normal’ mayo - and after trying it out on a few friends, some even preferred to to normal mayonnaise."