You Can Buy Dunkin's Swirl Syrups, But It'll Cost You A Pretty Penny - Tasting Table
Briefly

"Even if you're familiar with all of Dunkin's secret menu drinks, you are technically not able to buy these flavored syrups. The syrups you do manage to find for sale on Amazon are most likely there at the hands of a rogue employee."
"With a bit of thrifty culinary creativity, your next sweet treat of a beverage is waiting for you to pour it. Jordan's sugar-free skinny syrups cost around $10 for just over 25 fluid ounces."
Read at Tasting Table
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