Chocolate Raisin Walnut Pie - California Raisins in Canada

Ingredients

• ¼ Cup plus 2 tablespoons shortening*
• ¼ Teaspoon distilled white vinegar
• 1¼ Teaspoons milk
• 2 Tablespoons hot water
• 1 Cup all-purpose flour
• ½ Teaspoon salt
• ¾ Teaspoon cornstarch
• 1 Cup California raisins
• ¾ Cup milk chocolate chips
• ¾ Cup chopped walnuts
• 3 eggs
• ⅔ Cup granulated white sugar
• ¼ Teaspoon ground cinnamon
• 1 Teaspoon vanilla extract
• ⅓ Cup melted butter
• 1 Cup dark corn syrup