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Isn’t it taught in the baraita that Rabbi Yehuda says that one must bring a fine-flour meal offering since the verse opens with it first? The Gemara answers: This is what the baraita is saying: Which meal offering is the most notable of the meal offerings, as it has no modifier? It is this, i.e., the fine-flour meal offering, with which the verse opens first. The reason that Rabbi Yehuda holds that one must bring a fine-flour meal offering is not because the verse opens with it, but because it has no modifier.
The Gemara challenges: If so, the explanation of the baraita is unnecessary; isn’t it obviousthat Rabbi Yehuda is referring to the fine-flour meal offering, as he says so explicitly? The Gemara answers: The baraita explains that the reference to the meal offering with which the passage opens merely serves as a mnemonic, so one should not forget which type of meal offering Rabbi Yehuda is referring to.
A mnemonic device is a memory trick or memory device employing any learning technique that aids information retention or retrieval in the human memory, often by associating the information with something that is easier to remember.
It makes use of elaborative encoding, retrieval cues and imagery as specific tools to encode information in a way that allows for efficient storage and retrieval. It aids original information in becoming associated with something more accessible or meaningful—which in turn provides better retention of the information.