Prepare a lowball glass with a cube of ice or ice cubes. Add all of the ingredients to a cocktail shaker WITHOUT ice and dry shake for 8-10 seconds.
Add ice to the shaker and then shake again for another 8-10 seconds or so until everything is nice and cold. Strain through the fine-mesh strainer into the prepared glass. Garnish if desired and enjoy!
Notes
*The US Department of Agriculture (USDA) considers it safe to use raw eggs if they are pasteurized. Bottom Line: Raw eggs may contain a type of pathogenic bacteria called Salmonella, which can cause food poisoning. However, the risk of an egg being contaminated is quite low. Please proceed at your own risk and decide if you are ok with this. I have never had an issue.