The second significant toldah of Dash is sechita. Its application to fruits and vegetables occupies an extensive sugya in the beginning of the twenty second chapter, from 143b until the next mishna, 145b. Here is the sugya itself (link). Our first challenge was to distinguish grapes and olives from all other food products. Rashi talks about the squeezing of all other fruits as simply not a normal process, while the Ran makes a formal distinction between the status of olive oil and grape juice from all other absorbed liquids. This debate leads to a very important debate as to whether something can enter into the category of “grapes and olives” because it become normal to squeeze then or if the formal rules limit the category to “halakhik liquids.” Here are the mekorot for this part of the shiur (link). We also addressed the famous position of the Hazon Ish (O”H 33:5) regarding the beracha on fruit juices.
In addition, there is the important question of establishing minhagim based on the practice of your community. This issues has been obliterated in our contemporary reality in which nearly every fuit is squeezed for its juice. The advent of juicing bars makes shifts nearly every fruit into the category of something that is regularly squeezed. Here are the mekorot (link). The practice of Menashe ben Menachem was to squeeze pomegranates so that impacted all of Klal Yisrael. There are several important pieces in the Tosafot regarding the establishment of communal minhagim.
I will add the audio shiurim tonight or tomorrow.