Although falafel is made from chickpeas over here, in Lebanon it is usually made from dried fava beans, with a handful of dried chickpeas sometimes throwin in. Favas have a wonderful flavor, but if you can't find them, dried white beans, such as cannellini or navy, can be substituted.
Street vendors usually tuck falafel into pita bread with chopped lettuce and tomato and plenty of tahini sauce. At home, the balls can be served as an hors d'oeuvre, with a bowl of Tahini Sauce for dipping.
Drain and rinse the favas and chickpeas and put them in a food processor. Add the onion, parsley, cilantro, garlic, baking powder, salt, cumin and crushed red pepper. Pulse, scraping down the side of the bowl, to form a coarse paste. Add the water and process until the mixture is gritty but fine and brilliant green. Scrape the paste into a bowl.
In a medium saucepan, heat 2 inches of oil to 350°. Scoop rounded tablespoons of the falafel mixture into the hot oil and fry in small batches until browned and crisp, about 2 minutes. Drain on paper towels set over a wire rack and serve hot, with Tahini Sauce.