Orange juice
Ginger syrup (fresh ginger, lemon juice, water, honey)
Lemon juice

To make the ginger syrup, finely grate 4 tbsp ginger. Put it in a saucepan with 2 tbsp lemon juice, 2 tbsp water, and 2 tbsp honey. 

Put 1.5 shots of tequila (or gin or vodka), 1 part ginger syrup, 2 parts seltzer, 1 part orange, a squeeze of lemon juice, a dash of cayenne and ice in a cup. Stir. Voila!