If you haven't already, you need to craft the Dehydration Base:
1 x Dehydration Base Blueprints
4 x Splintered Wood
213 x Salt
You now need to hunt with your Swiss Army Mouse Trap or NVMRC Forcefield Trap, swiss cheese, and your Dehydration Base.
The only thing you need to do here is catch a few new mice.
If you haven't already you need to go to the Mountain. ------> Mountain.
If you already have, you need to keep hunting until you are a Master, and then you need to go to the Laboratory. ------> Laboratory.