You know, you can google this stuff...
Duncan Hines Perfectly Moist Chocolate Cake Mix ingredients:
Enriched Bleached Wheat Flour (Bleached Wheat Flour, Niacin, Reduced Iron, Thiamine Mononitrate, Riboflavin, Folic Acid), Sugar, Cocoa Powder (Processed with Alkali), Dextrose, Leavening (Sodium Bicarbonate, Sodium Aluminum Phosphate, Monocalcium Phosphate), Less than 2% of: Canola Oil, Modified Food Starch, Salt, Propylene Glycol Mono- and Diesters, Modified Corn Starch, Fractionated Palm Oil, Mono- and Diglycerides, Cellulose Gum, Sodium Stearoyl Lactylate, Xanthan Gum, Ascorbic Acid, Natural Flavor, Artificial Flavor, Wheat Starch. Contains: Wheat
Nutrition Facts:
About 10.0 servings per container
Serving size 1/10 package (43g)
Amount per serving
Calories 170
Total Fat 2 g
Saturated Fat 0.5 g
Trans Fat 0 g
Polyunsaturated Fat 0 g
Monounsaturated Fat 1 g
Cholesterol 0 mg
Sodium 370 mg
Total Carbohydrate 35 g
Dietary Fiber 1 g
Sugar 18 g
Added Sugar 18 g
Protein 2 g
Calcium 30 mg
Iron 1.2 mg
Potassium 120 mg
Vitamin D 0 mcg
Personally, if I wanted to add wheat flour and chocolate to a beer, I'd just use chocolate and wheat flour.