Clarify oil by settlement. Leave freshly extracted oils to stand in a small oil drum or bucket for several days allowing solids to settle. After settlement, pour off the clear or 'supernatant' oil, leaving the plant debris at the bottom of the container. These settled solids are called foots.
DADOS FORNECIDOS PELA ESCO (COMISSÃO EUROPEIA) E O*NET (DEPARTAMENTO DO TRABALHO DOS EUA)