You just know when you've stumbled upon something good. Early last Sunday morning, rain falling, I was moseying about the market when across the way from the muddy potatoes and tangled roots of horseradish I spied Jamface out of the corner of my eye. Here at the Adelaide Showground Farmers' Market, among the lemon bergamot pears and earthy winter vegetables, this bespoke stall is so gorgeously presented that a magazine stylist may well have waved a wand over it.  Artfully arranged with a hefty dose of panache and a cheeky, fun logo, I should have known that Poh had something to do with it! Newcomer Jamface ...