Cheap sour mixes are made from artificial lemon and lime flavoring along with corn syrup, coloring, preservatives, and stabilizers. Higher-end mixes are made with juice from concentrate, citric acid, and sugar. Despite its appearance, commercial sour mix is not made with radioactive citrus and will not give you super powers. (Though if it did, you would be able to thwart criminals by shooting a mildly irritating yet pleasant-smelling acid into their eyes.)
'citrus cocktails' on Serious Eats
I sought out delicious recipes featuring Meyer lemons, blood oranges, Satsumas, grapefruit, and lime, looking for drinks where the citrus was allowed to really shine. After a few long sessions of shaking and stirring citrusy concoctions created by bar stars like Jackson Cannon of The Hawthorne in Boston, Sean McClure of Craft in New York, Debbi Peek of the Bristol in Chicago, Todd Maul of Clio in Boston, and a few others, these 15 favorites emerged: refreshing drinks with an excellent balance of tart acidity and fresh sweetness. Just the right thing to sip as we wait for the weather to get warmer.
Every year around this time we get a bunch of annoying requests for low-cal cocktails, which we usually just ignore, because, let's be honest, if you want a low-cal beverage, drink water. We refuse to use artificial sweeteners or "diet" anything in our cocktails. But this year, after inventing several fabulous champagne cocktails for New Year's Eve, we scratched our heads, looked at each other and said, "Wait! I think we just invented some low-cal cocktails! Healthy, even?" OK, healthy may be a bit of a stretch, but they are made with fresh ingredients and most importantly, they're seriously delicious.