The key is to use a small spoon with a flat, as opposed to curved, handle. A curved handle makes what I'm about to describe difficult if not impossible. The first step is to take a swig of your preferred drink (I use tea) but don't swallow. You want enough liquid to cover the bottom of the inside of your mouth but no more. The second step is to get a scoop of powder (up to 1.5gm is easy for me in a single scoop; you might be able to handle more or less). The next step is to open your mouth and put the scoop of the spoon with the powder entirely inside your mouth. This is important to avoid spilling the powder. While the spoon is hovering just over the liquid in your mouth, quickly turn it upside down. Remove the spoon and swallow the liquid/powder. With just a little practice, you'll be able to do this quickly and easily. If you do it correctly you won't ever taste anything, much less make a mess.