electric smart herb and spice grinder - otto by banana bros banana bros you spend good money on your herbs. it’s time to get the most out of it – with otto. using its on-board microcomputer, otto gently mills your valuable herbs, and rolls it at the touch of a button. otto’s precision-engineered milling blades automatically adjust pressure, speed and direction based on the texture and consistency of your herbs. the result? a perfectly mixed, perfect roll in seconds. no mess. no waste. no waiting.