London Fog (Dairy Free Recipe) London Fog Metolius Tea This is my Iced London Fog Latte with cold foam. Its perfectly sweet, creamy, and so refreshing. , A London Fog is a sweetened Earl Grey tea with milk and vanilla. For this London Fog, Im using Amazon.com : Harney & Sons Victorian London Fog Tea, Black and Oolong Tea with Citrus, Vanilla and Lavender 30 Sachets, Historic Royal Palaces Collection (Tin Design May Vary) : Grocery & Gourmet Food