yogurt (Greek if possible), one glass
carbonated (fizzy) mineral water, 2-3 glasses
dried mint, one teaspoon
dried pennyroyal, one teaspoon (optional)
black pepper (optional)
Procedures : Beat yogurt until it flows smoothly. Add mint, pennyroyal, salt, and black pepper, and mix well. Add mineral water to yogurt gradually and mix as you add. The quantity of mineral water can be adjusted to obtain the desired density. Place in the frig for a few hours. Mix again before drinking. Carbonated doogh is a popular soft-drink in Iran.