Blender - oxidation and heat (dull flavour)
Cutting - preserves cell structure (intense and sharp heat)
Mortar and pestle - crushes cells to release essential oils and utilizes the presence of biofilm for depth.
I saw this recently.
If you need to get any book on the internet, type the name of the book followed by “doctype:pdf” and you’ll get the book in pdf format
For example, Purple Hibiscus doctype:pdf