The only real-world falafel I’ve had that comes close to the ideal I hold in my head is the falafel from Taïm. One of the keys to its deliciousness is the size of the balls. They tend to be quite small compared to typical falafel balls—just an inch and a half or so in diameter. This gets you a much better ratio of crisply fried exterior to moist interior. (There’s a reason why we cut French fries into sticks instead of just deep-frying whole potatoes.) They also triple down on the herbs with a combination of parsley, cilantro, and mint; most recipes call only for parsley and cilantro.
I start by soaking chickpeas overnight in water, carefully draining them, then putting them into the food processor along with a ton of herbs, some scallions (which I find give you better flavor and texture than the more common combination of onions and garlic), some salt, and some dried spices (cumin and coriander). I pulse them until they turn into a coarse meal that just holds its shape. You can also push them through a meat grinder fitted with a small die.