Have everything ready before you start. Some of the steps have to be carried out quickly.
1. Mix the first three oils in a large glass or stainless steel bowl. If any oil is in solid presentation, melt it before measuring the amount you need.
2. Measure the water in a glass or stainless steel container. Be sure to use a heat-resistant container when making the mixture, since the exothermic reaction when sodium hydroxide is added can cause heat of around 93°C.
3. Measure the amount of sodium hydroxide, and make sure you have exactly one quarter cup. Have a spoon ready and stir with it while slowly pouring sodium hydroxide into the water. You have to add sodium hydroxide to water, NEVER backwards.
Continue stirring until mixture begins to become clear. Avoid fumes while doing it. Allow the mixture to cool to approximately 50°C.
4. Heat the oil mixture and when it is at 23°C and slowly pour the sodium hydroxide mixed with the water into the oils, mix everything.