1 oz Pernod
1 oz Tequila
Dash Lemon juice
Stir over ice. Either strain in a cocktail glass or on the rocks in a highball glass. Serve with curl of lemon peel.
As long as the proportions of Pernod and Tequila are 1:1, any amount can be made. As much as I would like to take credit for it, I did not invent this drink - Gregory Benford mentions it in his novel "Timescape" where it is referred to only as a "Macho".