Yes, plant-based milk should generally be shaken before each use, not just before storage. This helps redistribute any settled solids and ensures a consistent flavor and texture.
Many plant-based milks, such as almond, soy, oat, and coconut milk, contain ingredients that can settle at the bottom of the container over time. These ingredients might include proteins, fibers, and stabilizers. Shaking the milk before pouring helps to re-emulsify these components, creating a more homogenous mixture. Without shaking, the first pour might be watery and lack flavor, while the last pour could be thick and overly concentrated. This is especially important after the milk has been sitting for a while, whether in the refrigerator or at room temperature (before opening). Shaking ensures that every serving has the intended taste and consistency.
If you find that your plant-based milk separates excessively, try a different brand. Some brands use better stabilizers or processing techniques that minimize separation. Also, avoid storing plant-based milk in the refrigerator door, as temperature fluctuations can exacerbate separation.