Read the following passage and fill the blank with ONE suitable word. Enjoyment is what drinking wine is all about. However, the more you know, 1________ easier it becomes to select the right wines for you or your guests. Wine is basically grape juice to 2________ yeast has been added causing it to ferment and produce alcohol. Alcohol is flavourless, so there must be something more 3________ wine than this. Many of the secrets of wine lie within the grape. Its pulp is a sugar solution which contains the things that give a wine its fruity flavour. In a dry wine, most of a grape’s sugar has been converted 4________ alcohol. In a sweet one, more sugar is left. This can be felt on the 5________ of the tongue. The pulp also contains acidity which gives the wine "crispness” that makes the mouth water. Too much 6________ it can make you wince, too little and the wine could taste dull. The skin contains flavour and tannin. Tannin produces a tingling sensation in the gums and gives a wine firmness. White grapes 7________ their skins removed before fermentation so tannin is only really found in red wines. The pulp of black and white grapes is 8________ same pale colour. The fact that the skins of black grapes are left on 9________ the wine is fermented gives red wine its colour. The wines which are often considered to be the best are 10________ where all the elements balance one another. There are many grape varieties grown in many climates which influence the emphasis given to these features and this is why wines can be so wonderfully different.