Katherine Duncan, purveyor of caramels and truffles that will make you go, "OMGthoseareamazing" as you drool all over yourself, is back at the farmers markets this season, this year with an ambitious goal: She vows she will make a new, market-driven truffle every week.

But fie the cold Chicago spring weather and slow-to-come harvest. At last week's markets, "all there was was rhubarb!" she lamented (if you could even get your hands on some, and unless you showed up super-early to Saturday's Green City Market, you probably didn't). So she went with ginger-blood orange, rose and fleur de sel and (locally ground) peanut butter and fleur de sel truffles.

She's still experimenting with the rhubarb, so this week, expect the ginger-blood orange again plus a Champagne-raspberry number -- using raspberries frozen from last year's haul.

Find Katherine Anne truffles at the Andersonville market on Wednesdays, Daley Plaza and Sears Tower on Thursdays and Division Street and Glenview on Saturdays.

"Can't wait for strawberries soon," Duncan says. Same here.