Fill your 2 gallon container 3/4 of the way with hot tap water. (As hot as it can get.)
Pour the shredded Zote bar into the 2 gallon container of hot water. Stir occasionally until all the Zote bar is dissolved.
Once the Zote bar is dissolved add 50 - 60 drops of an essential oil of your choice. Mix thoroughly.
Measure out 2 cups of borax and 2 cups of super washing soda. Add all four cups to the same bowl the shredded Zote bar was in.
Dump the mixture of borax and super washing soda into the 2 gallon container of hot water. The mixture will begin to thicken so you will need to mix quickly and thoroughly to fully incorporate the ingredients.
Once all ingredients are incorporated it is ready to use. The more the mixture cools it will continue to thicken.
Notes
How to use laundry soap
This laundry detergent is highly concentrated so it doesn't take much at all. For a small or regular size load use one tablespoon of detergent. For a large load use 2 tablespoons. If you have heavily soiled clothes use 2 - 2 tablespoons depending on how bad they are.