Do you have to coat blueberries in flour before you add to batter?

Coating blueberries in flour before adding them to batter helps prevent them from sinking to the bottom during baking. This technique is particularly useful in recipes like muffins or cakes. However, it's not strictly necessary; you can add blueberries directly to the batter, but they may settle more. Ultimately, it depends on your desired outcome and recipe.