Sprunk, a carbonated lemon lime drink

Peel the zest from two limes and two lemons, dragging the peeler across the fruit, and put the zest in a sauce pot.

Juice four limes and four lemons into the pot, add about a cup of sugar and heat until the sugar has melted into a heavily infused lemon lime syrup.

Take off the heat and strain after about two more minutes; peels left in too long turn dark and bitter.

Crush the caffeine pills to a fine dust and pass through a sieve to remove the coating and any large particles.

Combine the dust with the lemon lime syrup and add four scoops of pre-workout.

Add about two litres of seltzer to combine and dilute.

Serve chilled over ice.