2. Turn the bucket upside down (with the mouth down)

3. Shake the bucket up and down (just like when you open a beer and blow it out).

Turn the bucket upside down (the mouth of the bucket is facing up), open the lid and see if the spoon comes out.

5. If not, continue to step 1-4.

Extended data:

Protein powder is generally protein-rich powder made of purified soybean protein, casein, whey protein (lacking isoleucine), pea protein, or the combination of the above proteins. Its purpose is to supplement protein for people who lack protein, and it can also be used as a functional additive in food industry.

For healthy people, the lack of protein generally does not occur. Milk, eggs, meat, soybeans, wheat and corn contain all kinds of essential amino acids in sufficient quantities and appropriate proportions. Moreover, the psychological enjoyment and sensory stimulation brought by food can not be replaced by protein powder. Excessive intake of protein is not only a waste, but also harmful to human health.

Protein powder is a kind of nutritional complementary food for specific people. As an amino acid supplement food, it can provide essential nutrition for infants, the elderly, sports people, patients before and after operation and people who lose weight due to lack of protein.

In addition, people with poor appetite or digestive function, dieters and vegetarians may have insufficient intake of protein, which will not only lead to children's developmental retardation and affect the body's water metabolism, but also lead to various diseases such as low immune function, poor sleep and anemia. In these cases, high-quality protein powder has become a good supplement.