Think you don't like parsnips? You've probably just not cooked them right - and Jamie Oliver is here to change your mind. The celeb cook's secret hack to elevating the otherwise boring vegetable lies with two surprising ingredients: vinegar and honey. "The acidity of the vinegar cuts through the sweetness of the parsnips beautifully here, and the combo of bay and honey adds a real festive feel," Jamie said is his cookbook Keep Cooking at Christmas . "For the best results, don't peel them."