Figging

Figging is usually considered to indicate a good quality of soft soap, but such is really not the case. A first-class soft soap can be made which will not fig, while, on the other hand, a poor soap can be produced which will fig.

The figging is probably due to the separation of the potash salts of some of the fatty acids having a high solidifying point, i. e., [...]

Artificial figging was at one time produced by dispersing insoluble fillers in the base.