Prepare all the ingredients on the counter to be able to work well and quickly, especially the cream and egg white. Pour all the ingredients into a shaker. Shake vigorously for 1 minute: cream and egg white must be mixed perfectly, so don't rush. Now open the shaker and put some ice and shake for 1-2 minutes. It depends on how long you can resist! Pour into a highball glass, add a splash of soda and garnish to taste. Ramos Gin Fizz was once drunk as an invigorating drink or even as a breakfast, try it as an aperitif and after dinner and you will discover a little gem now lost.