Basically, its 2 egg whites, fluffled up in a bowl using a whisk (like a meringue). Whisk for 10 minutess then season with salt & pepper.

Chawanmushi (茶碗蒸し, literally "tea cup steam") is an egg custard dish found in Japan that uses the seeds of ginkgo.

This one in particular is created by Araxi, a restaurant on Whitler's famous ski slopes.