• Before beginning make sure you can work distraction free for at least two hours. No kids or pets around when you are making soap. Wear your safety gear and tie back your hair if it's long.
• Prepare silicone oval molds by placing on a parchment paper lined baking sheet. Set aside.

Weigh out the ingredients

• In separate bowls, measure out your olive oil, frozen breast milk*, and lye. Measure the oil into a large bowl to accommodate the addition of the lye solution later.

Make the lye solution

• Optional, prepare a large bowl with ice and water to act as an ice bath to keep the temperature of the lye solution low. Place the heatproof glass with the frozen milk into the ice bath.
• Carefully sprinkle a bit of lye over the top of the frozen breastmilk. Allow it to melt the milk a little and gently stir. Sprinkle some more lye, stir. Repeat until all the lye is added. Stir the mixture until the milk is melted and the lye dissolved.
• Check the temperature of the lye solution as you go. Try to keep the temps under 90F. When the lye solution is within ten degrees from the temperature of the olive oil (about 70-80F or room temperature for us Southerners), move on to the next step.

Make the soap batter

• Pouring through a stainless steel mesh strainer, carefully add the lye solution to the olive oil. Place your immersion blender into the olive oil and "burp" it to release any air trapped under the bell. Pulse for 20-30 seconds then stir. Repeat until the batter reaches trace, about 5-10 minutes.

Mold & Cure

• Pour the soap into your prepared molds. Place the tray with the molds into the fridge overnight or up to 12 hours.
• Pull soap bars from the fridge but keep them in the molds for a total of 48 hours. Once they've hardened, remove them from the molds and set aside in a well ventilated area to cure for 4-6 weeks before use.