MOST you still equate boiling technique between poaching, simmering, and boiling. Indeed, the difference between them just a little. However, for certain dishes are also different techniques used.
Here’s an explanation of each technique boil water which is often mentioned in Western recipes, as reviewed Whatscookingamerica:
Poaching is cooking food by immersing into the liquid just to a boil. Poaching is not boiling, generally used for the food completely submerged in the liquid is kept at a constant temperature and moderate, between 70-80 degrees Celsius. Keep the temperature remains constant, with a little practice. The surface of the liquid should just until it looks shiny with the possibility of a bubble.
Fluid usually cooked with this technique is that like a seasoned broth. Alternatively, soft foods, such as eggs, fish, fruit, and some organic meat stew. Food should be completely submerged in water.
Simmering (boiling at a lower temperature)
Simmering is usually done to cook the food with pieces of harder or foods that take a long time when cooked. Fluid temperature is usually between 85-95 degrees Celsius. Simmer sometimes called “soft boil”. Tiny bubbles periodically rise to the surface, gently and slowly, the temperature is lower.
You can boil to close it, but remember the temperature inside will rise and simmer pot can easily turn into a boil. Techniques normally used to make the broth simmer served as a sauce on your dish.
Boiling (boil until very boiling)
Boiled food is cooking in the boiling liquid, usually water. Boil water with a temperature of 100 degrees Celsius. No matter how long or how strong boiling bubbles are formed, the temperature will never be hotter, because at this temperature, water is converted into steam.