Cud Chew
Causes the Pokémon to reuse an already consumed Berry at the end of the next turn.
Full effect
When the Pokémon eats a Berry, it will regurgitate that Berry at the end of the next turn and eat it one more time.
In game description
When the Pokémon eats a Berry, it will regurgitate that Berry at the end of the next turn and eat it one more time.
Pokemon with Cud Chew
Using Cud Chew in Cobblemon
Abilities are passive and always active, so Cud Chew costs you nothing to run. If it is marked hidden on a species above, expect it to be harder to obtain: servers differ in whether hidden abilities come from breeding, an Ability Patch, or events.
See the Pokedex for which abilities each species can have, and IVs, EVs and breeding for how to actually pass one down.