My sister-in-law pours this 4 ingredient concoction at every backyard barbecue and it has completely replaced the dessert table.

can swirl around it and create that marbled look against the glass.

In a small measuring cup or bowl, stir together the coconut syrup and fresh lime juice until well combined. This makes a bright, sweet base so the lime doesn’t just sit on top of the cola.

Divide the coconut-lime mixture evenly between the two mason jars, pouring it right over the ice.

Slowly pour 1 cup of chilled diet cola into each jar. Tilt the jar slightly and pour