Boil a bottle of beer in an open pan for about an hour to reduce it. It should not be foaming on top when cooked. Let it cool down
Check the safety Guide if this is your first soap Pour NaOH in water (not the other way around) let it cool down. This is now called Lye
Mix the beer with the Lye
Melt your hard oils and butters, and mix them with the rest of the oils. Let it cool down
Mix your Lye into the oils and stick blend until a light trace
Divide your batter into two parts, one should be 3/4 and one 1/4
Color 3/4 with cocoa and turmeric, add all essential oil, stick blend until trace
Pour batter in the mold, and make sure to get rid of any air-bobbles (by tapping the mold to the table). This will be your "beer" layer
Color the remaining quarter of the batter with Titanium Dioxide, stick blend until trace, and pour it on top of the other in the mold. This will be your "beer foam" layer
Make a nice pattern to resemble foam with a spoon
Leave to set overnight, and see if it is ready to unmold and cut