Many investors are looking to alternative assets to invest in to diversify and boost their returns. Some are turning to wine, is this though a good alternative asset to invest in?Investing in wine can beat the returns available from the more traditional investments, such as stocks and shares. In recent times some fine wine portfolios have given better returns for example than the FTSE 100 or the Dow Jones. Other alternative asset options include art, classic cars, antiques or other collectables to boost investments.