Grating an ingredient increases its surface area, allowing it to cook or melt much faster due to greater exposure to heat. This is because more of the ingredient is directly in contact with the heat source.
When you grate an ingredient, you're essentially breaking it down into much smaller pieces. This process dramatically increases the total surface area of the ingredient. Think of it like this: a whole block of cheese has a limited surface area exposed to heat. However, when that same block is grated, each tiny shred has its own surface exposed.This increased surface area allows for more efficient heat transfer. Whether you're melting cheese, cooking vegetables, or browning breadcrumbs, the heat can penetrate the ingredient more quickly and evenly. This leads to a significantly reduced cooking time. For example, grated cheese will melt much faster than a block of cheese because the heat can reach all the individual strands almost simultaneously. Similarly, grated vegetables will soften and cook through more rapidly than larger chunks. The smaller the pieces, the faster the cooking process.
Be mindful of overcooking! Because grated ingredients cook so quickly, it's easy to accidentally burn or overcook them. Keep a close eye on your dish and adjust cooking times accordingly to prevent unwanted results.