Book excerpt: Making your own soda is easy, inexpensive, and fun. Best of all, you can control the sweetness level and ingredients to create a drink that suits your individual taste. In this guide to all things fizzy, Andrew Schloss presents a handful of simple techniques and recipes that will have you recreating your favorite commercial soft drinks and experimenting with new flavor combinations. Try your hand at Pomegranate Punch, Sparkling Espresso Jolt, Slightly Salty Caramel Seltzer, and more as you explore the endless bubbly possibilities.