This “strange mixture” of coffee and eggs is actually a historically documented home remedy and has been considered an intense energy and nutritional stimulant in some cultures (particularly Vietnam and some Scandinavian countries) for generations.

Directions: Drink it 30 minutes before any physical or mental exertion.

What’s behind the “secret drink”?
The effect of this mixture isn’t magical, but rather the direct combination of two potent substances that quickly provide energy to the body: caffeine and protein/fat.

The Role of Coffee (The Quick Kick)
Caffeine: The caffeine in coffee is the instant stimulant. When you drink it, it is quickly absorbed into the bloodstream and blocks adenosine receptors in the brain, reducing fatigue and increasing alertness. The Role of Eggs (Sustainable Fuel)
Protein and Fat: Raw (or lightly seasoned) eggs provide a high concentration of protein and healthy fats.

Delayed Energy: Unlike simple carbohydrates (like sugar), protein and fat are digested more slowly. This helps maintain the energy released by caffeine for a longer period and prevents a “caffeine crash.”
Nutrients: Eggs provide essential nutrients, such as choline, which are important for brain function.
Application: How is this mixture prepared?
The best-known traditional form is Vietnamese egg coffee (Cà phê trứng), where the egg is cooked softly instead of raw. “Mother’s version” for pure energy intake is often easier:
Ingredients:
1 cup of strong, hot coffee
1 egg yolk (or a whole egg, if you can handle the taste)
Optional: 1 teaspoon of condensed milk (traditional) or honey (for a slight sweetness and quick glucose release).
Preparation: Place the egg and condensed milk/honey in a cup. Slowly pour the hot coffee over it and beat vigorously with a whisk or hand mixer until thick and creamy (similar to a creamy cappuccino).
Timing: 30 minutes in advance
The recommendation to drink 30 minutes in advance makes physiological sense:

Caffeine generally reaches its peak concentration in the blood 30 to 60 minutes after ingestion. This is when the mixture begins to develop its full energizing effect.
Important Safety Notice
The risk of salmonella poisoning when consuming raw eggs is always minimal.

Use only fresh, pasteurized eggs, or eggs from a highly reputable source (e.g., farm eggs).
If you want to avoid this risk, opt for the creamy, heated version (as in egg coffee) or simply use egg powder (protein), which is safe.
Are you planning to try this unusual energy booster?