Looking to try making Tallow, I can buy beef fat from my butcher for only $0.99 per lb

Looked at a few recipes online just want to make sure I understand correctly ;

- Melt fat in pot, low heat, 4-6 hrs
- Strain with coriander or cheese cloth
- Put into container and store in fridge (do I let it cool to room temp first )
- Use just like butter