You already know and love Biker Jim's Gourmet Dogs (don't miss the reindeer or pheasant), but have you discovered Jim Pittenger's take on cheesecake? Turns out this sausage gourmand also loves to bake---especially when it comes to cheesecake. He's constantly tinkering with exciting combos, not the least of which are limoncello-sour orange and creme de menthe-white chocolate. An office favorite is the Irish car bomb, which tastes just like the college-age cocktail you used to swill. Now picture that trifecta of Baileys Irish cream, Guinness stout, and Jameson Irish whiskey in creamy cheesecake form. Yep, it's that good. While you can't pick up a slice at a Biker Jim cart, you can special-order the goodies. Two days notice is recommended. 16th and Arapahoe streets; 17th and California streets; and Argonaut Liquor's parking lot (760 E. Colfax Ave.)