This cooking technique involves submerging food in water that has been heated to the boiling point of 212 degrees Fahrenheit. The boiling water produces large bubbles, which keep foods in motion while they cook. The expression slow boil means that the water has just started to produce large, slow-moving bubbles but is not quite heated to the boiling temperature. A full boil occurs at the boiling point and results in fast-moving, rolling bubbles. Steam is also released from the water as it boils.