1/2 oz of grenadine syrup
1/2 oz of amaretto almond liqueur (or almond liqueur)
1/2 oz of 151 proof rum (or overproof rum)
Layer this drink! Grenadine first, Amaretto next, and 151 on top. Light the 151 and let it warm for about 3 seconds. Blow (lightly) to put the flame out and take the shot.