Always More Said than Done. Food in hand, but not into the mouth phenomenon. We hear of Nano-Diamond Crystals - Stronger than Diamond, Graphene... Stronger than Steel, AI etc., But, still People use Hammers To crack coconuts held in hands. Just Roll a coconut near a Robot/ Not near Echo or Baidu's Little Fish. It should grasp it in 1 hand and smash it against its other hand under cover, of course!
A larger informal study has already been taking place for a thousand-plus years, as this is a dietary restriction followed by some Taoist/Zen monks/hermits (slightly different in they would say no food after noon)
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Lofi version of phys.org