The most likely culprit for a flat or bland dish is a lack of salt. Salt enhances other flavors and brings them into balance.
When a dish tastes flat, it often means the flavors aren't popping or working together harmoniously. While other factors can contribute, salt is a crucial flavor enhancer. It doesn't just make things taste 'salty'; it actually amplifies the existing flavors of the ingredients. Think of it as a conductor for an orchestra – it brings all the individual instruments (flavors) together to create a cohesive and vibrant sound (taste). Without enough salt, the flavors remain muted and separate, resulting in a bland or flat experience. Adding a pinch of salt can often be the key to unlocking the full potential of your dish. Start with a small amount and taste as you go, adding more until the flavors come alive. Remember, you can always add more salt, but it's difficult to remove it.
Use kosher salt for cooking. Its larger crystals make it easier to control the amount you're adding, and it dissolves more evenly than table salt.