Advice on a specific use case?

The specific use case you have are as following:
1. Soap Making – How to properly mix NaOH with oils for homemade soap.
2. Drain Cleaning – How to safely use NaOH to unclog pipes.
3. Food Processing – Proper concentrations for peeling fruits, making pretzels,
or cocoa processing.
4. Water Treatment – Using NaOH to adjust pH levels.
5. General Cleaning – Making degreasers or oven cleaners.