What is the roll-cut method mentioned in the recipe?
There is no explanation of or link to the roll-cut method for preparing the eggplant—the headnote just says we should be familiar with it from another one of the author’s recipes?
Recipe question for: Mapo Eggplant
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This is a great example of how text based instructions (so popular with American recipe authors) are often far less communicative than a series of still images or full-motion video.
Here is the latter:
Best of luck.
You could probably search YouTube with that term and come up with more videos for your entertainment.