What choux batter reminds me of the most is a groovy bubble-blowing goo from the 70’s called Super Elastic Bubble Plastic (made by Wham-O!). It too starts as blob of putty-like material, but due to its extreme plasticity (and elasticity), it can be blown up into huge bubbles. I wish that stuff was still around. Sadly it was taken off the market in the early 80’s after the killjoys of the world pointed out that it gave off noxious fumes. Since when did those ever hurt anybody?