Chartreuse Cocktail

1 1/2 ounces        tequila; 3 T
1      ounce         green chartreuse liqueur; 2 T
1      ounce         lime juice; 1 T
1/4 cup           crushed ice

Pour all ingredients over ice in tightly covered container. Shake until
very cold. Pour into serving glass; garnish with lime slice, if desired.