Ippuku is small and easy to miss, but it’s worth the effort to find it on a busy stretch of Center Street in downtown Berkeley.  Everything at this Japanese yakitori grill is delicious!  Dinner items include chicken tartare ($9) and different chicken parts (thigh, skin, liver, gizzard, minced, shoulder blade, tail, thigh oyster, breast cartilage) served on skewers priced from $6 to $8 an order, with five sticks for $14.  Exceptional soups (all $6) include ramen and udon with chunks of chicken and a meaty, intense broth.  Vegetable offerings include grilled okra ($5) and tomatoes wrapped in bacon ($6). Tofu is served in various preparations, including skins with wasabi ($6) and crisp cubes in dashi broth ($7).  Cocktails are made from shochu (a distilled liquor usually made from sweet potato, barley, or rice); your server will bring you a glass of shochu and your own half grapefruit or lemon with a hand juicer to make your own drink!  Ippuku recently opened for weekday lunch, serving a variety of hot and cold handmade soba (buckwheat flour noodle) dishes from $9-15.