Always use food grade dry ice only. Never touch dry ice with bare hands. Use tongs always.
Always use a dry ice strainer over the glass so dry ice cannot be consumed. This is non-negotiable for safety.
The deep purple color comes entirely from fresh blackberries. Zero food coloring anywhere in this recipe.
Muddle blackberries completely. Every berry fully broken down means maximum color and flavor.
Double strain every time for a silky smooth cocktail with no seeds or pulp.
Taste before adding simple syrup. St. Germain is already sweet and you may need very little.
Fresh lemon juice only. Bottled will flatten the flavor significantly.
Serve immediately. This cocktail is most beautiful and most flavorful the moment it is made.
Always make the mocktail version too so everyone can be included.
Dry ice effect lasts 3 to 5 minutes. After it fully sublimates the cocktail is completely safe to drink normally.
