Brew just long enough to yield 1 to 1 1/2 ounces (30 to 44 ml) of espresso. Turn your machine off just as it finishes pouring the last of the pale-colored crema and before the espresso becomes watery, which you'll learn with practice. The exact time will depend on your machine.☞ TESTER TIP: If your grind is too coarse, the water will flow through too quickly. If it's too fine, the water can’t seem to get through. You'll get the hang of this with time.