When I have a jar of strawberry shrub in the fridge, mocktail hour turns into a five second pour and stir. This sweet tart syrup wakes up plain soda and gives you a grown up, fizzy sip with almost no work.
For a twist, you can swap half of the strawberries for chopped rhubarb if you want a sharper, more complex note. Once the shrub is made, your mocktail really is just pour, top with soda, add ice, and stir.