A flat liner is a layered cocktail which is drunk from a shooter glass. Tabasco sauce lies between two layers of spirits forming a line between them.
- Flat Liner from the Wikibooks Bartending Guide—original source of recipe, licensed under the GNU Free Documentation License
- Serves: 1
- Add one ounce of sambuca to a shot glass.
- Shake several drops of tabasco sauce onto the surface of the sambuca.
- Hold an inverted teaspoon in the glass and carefully layer the tequila over the sambuca.