Strawberry Rhubarb Chiffon Cake

Ingredients

• 1.8 cups flour all-purpose
• 2 teaspoons double-acting baking powder 
• 1 teaspoon salt 
• 1.3 cups granulated sugar 
• 0.5 cup vegetable oil 
• 6  egg yolk 
• 0.8 cup purple gel food coloring pureed
• 22 drops purple gel food coloring red
• 6  egg whites 
• 0.5 teaspoon cream of tartar 
• 1 cup rhubarb fresh frozen thawed drained chopped
• 2 teaspoons lemon zest grated
• 0.3 cup granulated sugar 
• 1 tablespoon water 
• 1.5 cups strawberries quartered
• 1 cup whipping cream 
• 1.5 cup powdered sugar 

Equipment

• bowl
• frying pan
• sauce pan
• oven
• hand mixer
• toothpicks
• cake form
• funnel

Directions

1. Heat oven to 350°F. In large bowl, mix flour, baking powder, salt and 1/2 cup of the granulated sugar until blended.
2. Add oil, egg yolks, pureed strawberries and food color. Beat with electric mixer on medium speed about 2 minutes or until blended; set aside.
3. Wash and dry beaters. In medium bowl, beat egg whites and cream of tartar with electric mixer on medium speed about 1 minute 30 seconds or until soft peaks form. Gradually add the remaining 3/4 cup granulated sugar. Beat until stiff peaks form. Fold one-third of the egg white mixture into the egg yolk batter gently but thoroughly. Fold in remaining egg white mixture.
4. Pour into ungreased 10-inch angel food (tube) cake pan. Tap pan on counter to remove air bubbles.
5. Bake 50 to 60 minutes or until toothpick inserted in center comes out clean. Immediately turn pan upside down onto heatproof bottle or funnel.
6. Let hang about 2 hours or until cake is completely cool.
7. Meanwhile, in 1-quart saucepan, heat rhubarb, lemon peel, 1/4 cup granulated sugar and the water to boiling over medium heat. Reduce heat to medium-low; simmer until soft and cooked through, about 3 minutes.
8. Remove from heat; set aside to cool, about 30 minutes. Stir in quartered strawberries.
9. In medium bowl, beat 1/2 cup of the whipping cream and 1 tablespoon of the powdered sugar until stiff peaks form. Fold in 1/2 cup of the cooled strawberry-rhubarb mixture. Reserve remaining mixture for top of cake.
10. Place cake top side down on serving platter.
11. Cut 1-inch layer off top of cake; set aside.
12. Cut tunnel into cake 1 inch deep and 1 inch wide; discard tunnel scraps. Fill tunnel with strawberry-rhubarb cream mixture. Replace top of cake.
13. To make glaze, stir together remaining 1/2 cup whipping cream and remaining powdered sugar (almost 1 1/2 cups) in medium bowl until smooth. Spoon glaze over top of cake, letting it run down side. Top with reserved strawberry-rhubarb mixture just before serving.