Olfaction is the sense of smell and gustation is the sense of taste.
You should find that they taste both as sweet, and cannot identify the food exactly. All the other 'flavours' are odours produced as food is crushed by the teeth. Receptor cells for taste are located mainly in taste buds on the upper surface of the tongue. Certain regions of the tongue appear to react more strongly than others to particular taste sensations. Molecules of the odour stimulate these olfactory cells, causing them to send impulses to the brain for processing.