
You don't need to tame it for it to produce Achatina paste. It will produce it in the wild on its own, so putting it in a pen close to water (wild Achatina needs to be close to water or it will die, as per the Ark wiki) will allow you to take advantage of this. Seeing as the paste is tough to see due to its size, it's recommended to build your pen on sand, or on any other terrain free from clutter.
Note that this has been only tested out on single player.
You have to enable wandering for it to passively generate cementing paste, so build a small pen for them to slime around in then go collect your reward. Also, don’t use a feeding trough…The cake spoils too quickly for how hard it is to make, I recommend hand feeding them before you get off each day, it will save you A LOT of resources and they will not die from starvation in that amount of time. Hope this helps 👍🏼
Just tame 5 or 10 of these and put inside them a lot of Stone or something heavy so they cannot move when you put them into patrol. With that, they passively generated 100 achatina paste every hour. When you don't take those achatina paste, they start to generate organic Polymer. Just make sure those snaila cannot move and you have a nice auto-paste farming.