Final answer:
Around 12 teaspoons of cocoa powder may be used for 16 ounces of chocolate milk, but this is an estimate and can vary with individual recipes and taste.
Step-by-step explanation:
The question regarding the amount of cocoa powder needed to make 16 oz of chocolate milk falls under a practical application of measurements in Mathematics, specifically within a cooking context. Unfortunately, without a specific recipe, it's not possible to give a precise number of teaspoons needed as it can vary depending on one's taste preference and the intensity of the cocoa powder.
However, a standard recipe might use about 2 tablespoons (which is equivalent to 6 teaspoons) of cocoa powder for every 8 ounces of milk.
Therefore, for 16 ounces of milk, you would likely use 12 teaspoons of cocoa powder to make chocolate milk. Keep in mind that this is approximate and adjustments may be needed based on the actual recipe you are following and your flavor preferences.