Final answer:
The regular temperature for milk to be steamed is about 60°C to 70°C for general use but should be around 37°C to 40°C for kids to ensure it's warm but not too hot.
Step-by-step explanation:
The regular temp for milk to be steamed to for various purposes, like making coffee or hot chocolate, is around 60°C to 70°C (140°F to 158°F). This temperature range is hot enough to pasteurize the milk but not so hot as to burn or denature the proteins, which can affect the taste and texture. For kids, particularly with younger children or infants, extra caution is recommended. Milk should be steamed to a temperature that is warm to the touch, around 37°C to 40°C (98.6°F to 104°F), to ensure it is not too hot and to maintain nutritional integrity. Furthermore, when preparing milk for something like yogurt, as per the given reference, it is suggested to steam and incubate the milk at a temperature between 38°C to 40°C overnight.