Pour cold milk or cream into a jar with a tight lid, filling it no more than halfway
Add sweetener or flavored syrup if desired
Seal the jar tightly
Shake vigorously for 20 to 60 seconds until foamy
Let it sit for 10 to 20 seconds to thicken
Spoon the foam onto your cold drink
Use a whisk in a bowl and whisk rapidly until foamy
Use a blender and blend on low for a few seconds until frothy
Use a hand mixer on low speed until light and foamy
Use a French press and pump the plunger up and down until foamy
Use a milk bottle or shaker bottle and shake until foam forms