Tribune photo by Aaron Piper/ Jason Stahl mixes liquid nitrogen with other ingredients to produce ice cream at his booth Sub Zero Ice Cream at the Jackson County Fair. The booth is the mobile portion of the Sub Zero Ice Cream company based in Indianapolis. Stahl grew up in Seymour but now lives in Cicero with his family. "There's a little bit of showmanship to it, but the product is good ice cream," Stahl said.