Maaseros 1:7-8
Maasros 1:7
Wine becomes liable in tithes after the refuse has been skimmed off. Even though the wine in the lower vat has been skimmed, the owner may gather and drink wine from the upper vat and the pipe that connects them. Oil becomes liable in tithes when it has descended from the olive-press into the receptacle. Even though the oil has descended into the receptacle, the owner may take oil from the basket of the press, or from between the components of the press, and put it into food. He may not, however, put it into a pot or pan that is boiling. Rabbi Yehuda permits one to add the oil into anything except something that contains vinegar or brine.
Maasros 1:8
A cake of figs becomes liable in tithes when it has been smoothed. One may smooth it using juice from tevel figs or grapes; Rabbi Yehuda does not permit this. If it was smoothed using grapes, it does not become susceptible to ritual impurity (because grape juice is not the same as wine for this purpose); Rabbi Yehuda says that it does become susceptible. Dried figs become liable in tithes when they are pressed into the barrel or the storage bin. If one was doing so and the barrel broke or the bin opened, the owner may no longer snack from them; Rabbi Yosi permits this.