The Arab contributions to food production are legion. They were able to graft a single vine so that it would bear grapes in different colors, and their vineyards were responsible for the future of wine industries of Europe. Peach, apricot, and loquat trees were transplanted in southern Europe by Arab soldiers. The hardy olive was encouraged to grow in the sandy soil of Greece, Spain, and Sicily. From India they introduced the cultivation of sugar, and from Egypt they brought cotton to European markets. "May there always be coffee at your house" was their expression, wishing prosperity and the joy of hospitality for their friends. Coffee was qahwah that which gives strength, and derivatives of that name are used today in almost every country of the world. They also perfected the storage of soft fruits to be eaten fresh throughout the year.