In our house, we generally go for variety in our coffee beans. That means when we are finishing one bag, we’re going to open a different bag with totally different beans inside.
What do you do if there aren’t enough old beans to make a full serving of coffee?
It may be heresey, but I mix the final old beans with a few beans from the new bag and call it my “bonus blend”.
I pour my old grounds out of my storage bag into a small bowl, pour my new grounds into my storage bag, then I pour the old grounds on top of my new grounds, and they should get used first.
I don’t shake my storage bag to mix the old grounds and the new evenly.