I ordered sundaes from Cold Stone Creamery, Dairy Queen, and Carvel. One stood out as the clear winner. I got the same ice-cream sundae from Cold Stone Creamery, Dairy Queen, and Carvel. Ivy Carbone I ordered hot-fudge sundaes from Cold Stone Creamery, Dairy Queen , and Carvel. I loved the thick hot fudge on the one from Dairy Queen, even though the sundae itself was simple. However, the version from Carvel was nearly perfect, and I'd definitely get it again. Nothing screams warm weather quite like an ice-cream sundae . And although the classic combination — typically ice cream, hot fudge, and whipped cream — seems pretty basic, I was curious to see which dessert chain does it best. So, I visited my local Cold Stone Creamery, Dairy Queen, and Carvel locations and ordered a medium hot-fudge sundae at each chain. Here's how it went. Prices may vary by location. First, I visited Cold Stone Creamery. Cold Stone Creamery is known for its menu of Signature Creations.…