Special Guest: Recipes for the happily imperfect hostIf you are someone who prepares for guests by sweeping bills, laundry and newspapers behind sofa cushions, take heart! It's possible to be an imperfect host, but happily so. The essential ingredient is not, paradoxically, the food, nor the perfect house to host in, but the sentiment you convey when you open the door. Do your eyes say: 'I like you and I enjoy your company,' or does a weepy cloud of visceral horror descend as pine nuts burn quietly in