Except for explaining who David is and why he'd be willing to share his goodies with us, the name says it all. Whimsical enough to stand on the banks of Willy Wonka's chocolate stream, the signature dessert at Flat Iron Tapas Bar & Lounge (Bulfinch Hotel, 107 Merrimac Street, Boston, 617.778.2900) is a metal tower - that part's not edible - stuck through with 10 lollipop sticks (neither are those), ending in balls of cheesecake that aren't merely edible but utterly scrumptious. Some are cherry-flavored; others crunch with Heath-bar pieces; still others contrast dark chocolate with white. All leave us praising ol' Dave's largesse.