

That just looks like fondant balls brushed with a luster dust. Super simple.

you could blow sugar bubbles -- i just googled 'blowing sugar bubbles' and got several videos and lots of links -- easy fun and be careful don't burn yourself!

I do think these are fondant balls with luster dust too. Easy, but so time consuming.
I've made beer 'foam' with buttercream too. That has a wetter look to me.

Did a google image search, and found the original post of it here on CC. Looks like the bubbles are indeed fondant dusted with luster dust.
http://www.cakecentral.com/gallery/i/2272053/evil-scientist-birthday-cake

my post suggesting blown sugar bubbles goes under neda_la's request for 'something more realistic' -- yes of course the pictured ones are fondant


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