If you don't mean completely illusory like a hologram then you were sorta right, usually if the scene has consumption in it the prop department is in charge and the items are fake so that they match from take to take and scene to scene, some examples being food coloring a sponge and some watermelon slabs dressed up as a steak or ice cream usually being frosting or a white chocolate confection designed to behave like a durable heat resistant ice cream, so it doesn't melt but can be consumed, apple juice replacing beer and spirits, grape juice replacing wine, if there is a lot of food or drink being consumed there is usually a spit bucket for each actor.