Heat the chocolate until melted. This can be done in the microwave or over a double boiler. When melting chocolate, be sure that no water comes in contact with the chocolate, or it will not melt. Transfer the melted chocolate into a large mixing bowl.
Using a wire whisk, whisk the egg yolks, eggs, Kahlua, and coffee into the melted chocolate until very smooth. Set aside.
In a separate bowl, using a hand mixer or stand mixer, whip cream until stiff.
In a third bowl, using a hand mixer or stand mixer, whip egg whites with a pinch of salt until stiff peaks form.
Fold whipped egg whites into chocolate mixture.
Fold in whipped cream gently until completely incorporated.
Place the chocolate mousse in a pastry bag fitted with a star tip or fill a ziptop bag and cut the corner of the bag off. Pipe mousse into 12 glasses or ramekins.
Cover and refrigerate for at least 2 hours before serving. Garnish with whipped cream and chocolate shavings or cocoa powder.
Notes
Consuming raw or undercooked meats, poultry, eggs or seafood may increase your risk of foodborne illness, and can be dangerous to those who are children, elderly, pregnant mothers or immunocompromised.I recommend buying organic eggs. In addition, please use either shell eggs that have been treated to destroy Salmonella, by pasteurization or another approved method, or pasteurized egg products. There are several egg brands that are pasteurized. Pasteurization eliminates bacteria like Salmonella and other viruses. Please check with your local grocer or natural foods market for their selection.Please follow safe egg handling procedures. In the USA, only buy eggs if they’re sold from a refrigerator or refrigerated case. Always open the carton and make sure that the eggs are clean and the shells are not cracked. If there are any cracks put it back and do not buy it. Also, if any crack on the way home, throw that egg away.In the U.S., our store-bought eggs are washed, so never leave them sitting on the counter, because all the protective covering of the egg has been washed off.Wash your hands, utensils, equipment, and work surfaces with hot, soapy water before and after they come in contact with raw eggs and raw egg-containing foods.