2 oz of bourbon whiskey
1/2 oz of Triple Sec
1 tsp of grand marnier orange liqueur (or orange liqueur)
1/2 of msr tequila (or Agavero Tequila Liqueur)
Mix or shake all ingredients, except grand marnier, with cracked ice in a shaker. Pour or strain into large chilled wine glass or snifter. Float grand marnier on top.