How can you test a cake for doneness?

To test a cake for doneness, pressing the center lightly is effective because a properly baked cake should have a certain structural integrity. When you press down in the center, the cake should spring back, indicating that it has set properly and is not underbaked. If it doesn't spring back and leaves an indentation instead, the cake likely needs more time in the oven. This method directly evaluates the texture and consistency of the cake, providing immediate feedback on its doneness.

The other methods, while they can offer clues, are less reliable. Checking the outside color can sometimes mislead, as cakes may appear brown while still being raw inside. Inserting a toothpick is also a common method; however, it may not always be failproof, especially with cakes that are more moist and may leave residues on the toothpick despite being done. Tapping the sides can provide some audible and tactile cues, but it doesn't assess the internal structure or readiness as effectively as pressing the center.