Most purees can be created by placing them into a blender or food processor until completely smooth. Some ingredients may require a small amount of additional water to achieve a smooth texture. Don't forget to always use distilled water!
Lemon Soap - Q&A I don't recommend adding lemon juice to a melt and pour soap. The base can only accept so much liquid, especially, non-oil types. Lemon essential oil is best. Zest as I've used in this recipe is also fine, as it is mostly solid with some oils in the rind.