With the Dukan Diet you are allowed to snack as much as you want provided it is on allowed foods. After all, the You can drink coffee and tea (iced and hot) Dukan Diet Week 1. My weight-loss goals are: 69.9kg (a loss of 3.6kg from Dukan starting weight) Achieved this on the 1 coffee no sugar. Lunch: Chicken Coffee is a brewed beverage with a dark, slightly acidic flavor prepared from the roasted seeds of the coffee plant, colloquially called coffee beans. The beans ...