Three Methods of Spherification

Spherification is the culinary art of encapsulating liquids into edible and decorative globes shaped like caviar eggs. There are three methods of accomplishing this depending on the calcium content of the liquid to be encapsulated. The most common is simply called, spherification, and then there is reverse spherification with the third and a more recent technique, known as frozen reverse spherification.

In the first method, basic spherification, flavored liquids such as fruit juices, which contain no calcium, are thoroughly mixed with a small quantity of powdered sodium alginate, and then dripped into a vessel filled with of calcium chloride and cold water, or other soluble calcium salt. The calcium solution causes the outer layer of each liquid sphere containing the alginate to form a thin, flexible skin.

Reverse spherification is the method used when a liquid to be spherified contains calcium, alcohol or is high in acid. In this case, the technique is reversed in that the liquid to be spherified is mixed, not with sodium alginate, but with calcium lactate or calcium lactate gluconate, then dropping it into a sodium alginate bath.

The third method, frozen reverse spherification, is identical to reverse spherification, except for the freezing step. This method saves preparation time by freezing the main ingredient in silicone molds shaped like spheres in advance. More importantly it doesn’t require the artistic finesse require in general reverse spherification; so that the results produced are always consistently sized, perfectly shaped spheres.

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