1/3 a fluid ounce or 1 centilitre of Grenadine
1/3 a fluid ounce or 1 centilitre of Creme de Menthe
1/3 a fluid ounce or 1 centilitre of Bacardi 151 Proof Rum

Layer in a shot glass in order (grenadine at the bottom). Light the 151. Let it get warm, but not hot enough to burn your lips. Gently blow out the flame and shoot it down fast. Ohhhhhh what a warming feeling. ALWAYS USE CAUTION WITH FIRE.