Here is an example of the espuma schaeumerei Juan Amador conjures up with a cream siphon.
* Mix pineapple juice with sugar (your choice) and stir indes until completely dissolved, then strain through a fine sieve.
* Bring pineapple juice to a boil, cool slightly and add the gelatin soaked in cold water.
* Over a gentle heat, let the gelatin melt and then remove everything together from the kitchen stove.
* Cool, pour into a cream siphon and place in the refrigerator to cool.
Dressing: Cut fresh pineapple or other fruit into slices, arrange on a plate and decorate with pineapple espuma from the siphon.