Apple, California Raisin and Curry Soup - California Raisins

Ingredients

• 2 Tablespoons vegetable oil
• 1 medium onion, chopped
• 2 Tablespoons curry powder
• 1 Tablespoon cornstarch
• 2 large cooking apples, peeled, cored
• 2 Cups vegetable stock
• 1/4 Cup California golden raisins
• 2 lemons, 1 grated zest and juice, 1 to soak
• salt to taste
• pepper to taste
• 2 egg yolks
• 1/2 Cup heavy cream
• 1 dessert apple, cored, sliced, soaked in lemon juice
• watercress springs or fresh mint leaves, several