We're in the midst of a heat wave right now which inspired me to post this recipe. It's from The Colour Book of Cooking for Two. The sweetness of the sultanas complement this refreshing, garlic flavoured soup. I have successfully increased the servings for this soup so that I could include it as part of a buffet lunch. I kept it cold by placing the soup tureen (actually a large casserole dish) into a larger container filled with ice.