New Immigrants and Old. Americans at the turn of the century were alarmed about what they perceived as a change in the type of immigrants entering the United States. Some of the traits they saw as distinguishing the new immigrants from the old immigrants were real; some were imagined; some were half-true. The old immigration peaked in the 1880s. The new immigration peaked in 1907.
It is absolutely OK to filter and reuse deep-fry oil. It's not uncommon at some short-order restaurants for them to filter the oil daily and only change it once a week. Of course, it does start to taste a little off when you reuse it that many times.
These oils are not consumed in the soap making process and remain to nourish your skin. These unreacted oils add beneficial properties to the soap, but they can spoil over long periods of time. We do not use synthetic stabilizers or preservatives like BHT or Trisodium EDTA to prolong shelf life.