Step 1 Puree the cucumbers in a blender. Push the cucumbers through a sieve into a medium bowl. Blend the grapes and garlic in the blender, then push through a sieve and stir into the cucumbers.
Step 2 Whisk in the yogurt, sour cream and lemon juice, and season with the salt, sugar and vinegar. Add the Tabasco to taste. This makes about 1 1/2 quarts of soup. Chill the soup, then divide among chilled bowls and garnish with the almonds, grapes and paprika oil before serving.