Prepare ready-to-mix powdered baby formula by following the instructions on the back of the package. Powdered baby formula typically calls for one scoop for every 2 ounces of water. Find out more about baby formula mixes with information from the mother of three young children in this free video on baby care and nutrition. Expert: Erica Goms Bio: Erica Goms has mothered three children that are currently five and under. She has extensive knowledge in raising and taking care of these wonderful children. Filmmaker: Michael Burton