Slow cooking garlic mellows its pungent flavor, transforming it into a sweet, nutty, and caramelized taste due to the breakdown of allicin and the development of new flavor compounds.
Garlic's characteristic strong flavor comes from a compound called allicin, which is released when garlic cloves are crushed or chopped. When garlic is cooked slowly at low temperatures, this allicin breaks down gradually. This process allows enzymes to work on the garlic's carbohydrates and sugars, leading to caramelization and the creation of new, sweeter, and more complex flavor compounds. The extended cooking time also allows the garlic's natural sugars to develop, resulting in a richer, more nuanced taste profile. Think of it like roasting vegetables – the longer they cook at a lower temperature, the sweeter and more flavorful they become. Slow cooking garlic achieves a similar effect, transforming its sharp bite into a mellow, almost buttery sweetness.
When slow cooking garlic, be careful not to burn it. Burnt garlic becomes bitter and unpleasant. Keep the temperature low and monitor it closely, especially if cooking whole cloves.