When baking with berries like blueberries and strawberries, I’ve noticed their colors can shift dramatically depending on the recipe’s ingredients. This is due to a pigment called anthocyanin, which is sensitive to pH changes during baking. For example, baking soda raises the pH, creating a more basic environment. In this case, blueberries can change from their usual purple-blue to a muted greenish or blue color. On the other hand, adding an acid like lemon juice or citric acid lowers the pH, intensifying red or pink tones, especially in strawberries and sometimes in blueberries turning red-pink. In my experience baking berry cookies, simply tweaking the amount of baking soda or adding a splash of lemon juice can completely alter the visual appeal of the final product. This is great if you want to create vibrant cookie colors or simply understand why your baked goods don’t look exactly like the fresh berries. The anthocyanins’ color stability also depends on heat and moisture, so baking time and temperature play roles too. These compounds are quite delicate, and their interaction with recipe components makes berry baking a small science experiment. Knowing this, I usually experiment with small batches, adjusting baking soda or lemon juice to get the color I want. It’s a simple way to enhance both the visual and sensory experience of berry baked treats. Plus, sharing these tips with friends who bake helps everyone appreciate the connection between ingredient chemistry and delicious results.