[header] How to make kvass [title] Put 1.5 liters of water into a pot and bring it to a boil. [step] For this recipe you will need 1.5 liters (0.4 us gal) of water. You can make more or less at a time, but make sure to scale ingredients properly. 
[title] Take 2 slices of rye or pumpernickel bread. [step] Toast them in a toaster on maximum settings.