They come in a variety of shapes and sizes, from a restaurant-style soda gun to the more common seltzer maker, which is powered by a CO2 cartridge. Next, decide what kind of flavor you’d like.

“But that is the whole point,” says Andrew Schloss, author of Homemade Soda. “It’s great to figure out how to take a commercial product and make it,” he says. And it’s easy. Take Coca-Col ...

Store the finished syrup in a squeeze bottle in the refrigerator for instant access. To make homemade soda, simply add syrup to a glass of ice and top off with seltzer water or club soda.

barely bubbly homemade soda water. While many other soda makers are difficult to use, overengineered, and annoying to assemble, the OmniFizz is simple and effective. The OmniFizz also lets you ...

Probably not. When your namesake product is on the outs with your core market, it's time to mix up the business a bit. Tying up with a DIY soda maker is worth a shot.

The OmniFizz is a manual, rather than electric, soda maker, and it has just one button to push. The more you push it, the more carbonation you get. “A soda maker is really a very simple machine ...

So you’re consuming about two-thirds less sugar with SodaStream, compared to normal soda. That’s great—unless ... 20 ounces,” he says. “If you make a liter of SodaStream cola, you ...