Wine is made from grapes so why are some wines said to be not suitable for vegetarians?

It’s all to do with the fining agents that are used to clarify the wine. A clarifying or fining agent makes wine clear by removing proteins from the wine. The agents eventually settle out of the wine. Some fining agents are animal-based products, while others are earth-based. Common animal-based agents include egg whites, milk, gelatin, and isinglass. Gelatin is an animal protein derived from the skin and connective tissue of pigs and cows. Isinglass is prepared from the bladder of the sturgeon fish, while egg whites and milk can also be used.
The quantities used are miniscule: whites from 3 eggs can clarify 250 litre of wine Both the clarifying agents and the removed proteins coagulate on the bottom of the wine tank or barrel. They are then removed through either a settling process or a cellulose fibre filter and are not present in the finished product.
It depends on how strict a vegetarian (or vegan) is as to whether the fining agent is a concern.

25 vintages of Primo Estate Joseph Moda Amarone on video

With the release later this week of the 2012 vintage, Primo Estate have clocked up 25 vintages of this outstanding Aussie Cabernet Merlot. You can see the videos of winemaker Joe Grilli tasting all 25 vintages of Moda here.

Joe Grilli combines Aussie know-how with his traditional Italian winemaking by air drying the finest McLaren Vale fruit on shaded outdoor racks for two weeks prior to crushing. The fruit is concentrated so that it loses around 15% of its weight. This inspired use of the Italian Amarone technique creates an opulent, brooding wine.

2012 Primo Estate Moda

The 2012 vintage was a near perfect ‘no excuses’ growing season in McLaren Vale. Whilst there was plenty of dry, warm weather in the lead up to harvest the really hot temperatures were only short lived and the ideal combination of warm sunny days and cool nights prevailed. Not surprisingly these conditions have produced wines with lovely poise.

Intense bouquet of concentrated blackcurrant fruit intermingled with characteristic raisin and cigar box notes. Mouth filling palate of rich, lush blackcurrant wrapped in fine dark chocolate. The palate goes on and on, all the way to a gentle tannin finish and some lingering cedar oak.