Quite often the pasta is cooked, tossed in butter then served on a warm plate with the truffles sliced over it on the desk. I buy my truffle oil at Wegman's (east coast grocery store) but I have also seen it at Williams Sonoma, Marshalls, HomeGoods and Sur La Table. I've never seen it right here. Since we've got three Costco's near us I do know they're all s...