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, (56)________ easier it becomes to select the right wines for you or your guests. Wine is basically grape juice to (57)________ yeast has been added causing it to ferment and produce alcohol. Alcohol is flavourless, so there must be something more (58)________ 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 (59)________ alcohol. In a sweet one, more sugar is left. This can be felt on the (60)________ of the tongue. The pulp also contains acidity which gives the wine "crispness” that makes the mouth water. Too much (61)________ 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 (62)________ their skins removed before fermentation so tannin is only really found in red wines. The pulp of black and white grapes is (63)________ same pale colour. The fact that the skins of black grapes are left on (64)________ the wine is fermented gives red wine its colour. The wines which are often considered to be the best are (65)________ 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.

However, the more you know, (56)________ easier it becomes to select the right wines for you or your guests.