Restaurants in private homes — sharing economy's latest trend

Nadya Khoja grinds pepper over brussel sprouts sizzling on the stove. Her roommate, Sarah Lee, mashes feta, butter and parsley in a bowl. The evening's menu was carefully planned: brussel sprout salad topped with apples and walnuts, followed by macaroni and feta cheese with tiger shrimp. But tonight's two dinner guests are largely a mystery.