To kick things off, we’re going to prepare the coffee lye solution. The strength of the coffee is up to you, but I always go for a medium strength in the 5 oz of brewed coffee. If you would like a dark and rich color, then I recommend making it a bit stronger.

Measure 5 oz of coffee into a container. Add 5 oz of distilled water to the coffee and leave the mix to cool down to room temperature.

Once the liquid has cooled, slowly and very carefully add the sodium hydroxide lye to the coffee. Stir gently and carefully until the lye flakes have dissolved. The solution should then darken and start to smell quite unpleasant. This is to be expected though, so don’t worry. Set aside to cool.

Melt the olive oil, coconut oil, palm oil, coffee oil and coffee butter. Combine thoroughly.

Once the lye and oils have cooled to 130 degrees or below, add the lye to the oils and stick blend until the mix is thin.

Add 2 teaspoons of sodium lactate and stick blend the soap until at a thin trace.

Keep stick blending until the mix becomes a medium tace. This consistency is perfect for suspending the coffee grounds, creating a nice texture on the surface.

Add 2 tablespoons of coffee grounds to the soap. Whisk to fully incorporate the grounds.

Pour the soap batter into a mold. Make sure to tap the mold on the counter to help rid the mix of bubbles.

Use a spoon to mound the soap in the center and create texture.

Place coffee beans in the center of the soap down the length of the mold. Gently pressing the beans into the soap will help them stick better. Once you’re happy with the look, spritz the top with 99% isopropyl alcohol to prevent soda ash.

Leave the soap in the mold for about two or three days. Unmold, and cut into bars.

Allow the bars to cure for four to six weeks, and enjoy!