Why did my "goat cheese espuma" flop?
Goat Cheese is dry compared to many other cheeses.  We make a goat cheese pizza but have to moisten the shredded goat cheese with goat milk into a kind of slurry.  Very low in lactose and tastes good but it doesnt even melt much because it is so dry.  Probably lower in fat too I would guess.  If your espuma is too dry try adding more goat milk to the mixture until it just moves in the blender.