The recommended boiling time for eggs in a bear-shaped steamer is approximately 10 to 12 minutes. This duration ensures that the eggs are fully cooked without overcooking, which can lead to rubbery texture. The bear-shaped steamer, like other steamers, provides an even distribution of heat, which is crucial for achieving a consistent and perfect boil.

The reason for this duration lies in the cooking process of eggs. Eggs are primarily made up of proteins and water, and when heated, the proteins denature and coagulate. The time it takes for the proteins to reach the desired level of coagulation depends on the size of the egg and the temperature of the water. A bear-shaped steamer, with its unique design, allows for a more controlled and even heat distribution compared to traditional pots or pans. This even heat ensures that the eggs cook uniformly without the risk of burning or undercooking.

According to a study published in the Journal of Food Science, the ideal cooking temperature for eggs is around 212°F (100°C). At this temperature, the proteins in the egg white start to coagulate at around 140°F (60°C), while the yolk begins to set at around 158°F (70°C). Therefore, boiling eggs for 10 to 12 minutes allows the proteins to fully coagulate and the yolk to set without becoming too hard.

Additionally, the shape of the bear-shaped steamer may also contribute to the cooking time. The design often includes a lid that traps steam, which helps to maintain a consistent temperature inside the steamer. This trapped steam ensures that the eggs are cooked evenly and prevents the water from boiling away too quickly, which could result in undercooked eggs.

In conclusion, boiling eggs in a bear-shaped steamer for 10 to 12 minutes is the ideal duration to achieve perfectly cooked eggs. The unique design of the steamer, combined with the controlled heat distribution and trapped steam, ensures that the eggs are cooked evenly and to the perfect temperature.